The Dodge Viper is a super car manufactured by Dodge (SRT for 2013 and 2014), a division of FCA US LLC from 1988 through 2017 having taken a brief hiatus from 2010-2013. Production of the two-seat sports car began at New Mack Assembly in 1988 and moved to Conner Avenue Assembly in October 1995.
Although Chrysler considered ending production because of serious financial problems, on September 14, 2010, chief executive Sergio Marchionne announced and showed a new model of the Viper for 2012. In 2014, the Viper was named number 10 on the "Most American Cars" list, meaning 75% or more of its parts are manufactured in the U.S.  The Viper was initially conceived in late 1988 at Chrysler's Advanced Design Studios. In 2000 Chrysler had Lamborghini make an engine two liters bigger than the Diablo’s engine when Chrysler owned Lamborghini. It was also designed by the man who designed the Diablo. The original Viper was also designed by Lamborghini. The following February, Chrysler president Bob Lutz suggested to Tom Gale at Chrysler Design that the company should consider producing a modern Cobra, and a clay model was presented to Lutz a few months later. Produced in sheet metal by Metalcrafters,  the car appeared as a concept at the North American International Auto Show in 1989. Public reaction was so enthusiastic that chief engineer Roy Sjoberg was directed to develop it as a standard production vehicle.
Sjoberg selected 85 engineers to be "Team Viper", with development beginning in March 1989. The team asked the then-Chrysler subsidiary Lamborghini to cast a prototype aluminum block for the sports car to use in May. The production body was completed in the fall, with a chassis prototype running in December. Though a V8 engine was first used in the test mule, the V10, which the production car was meant to use, was ready in February 1990. Official approval from Chrysler chairman Lee Iacocca came in May 1990. One year later, Carroll Shelby piloted a pre-production car as the pace vehicle in the Indianapolis 500 race. In November 1991, the car was released to reviewers with first retail shipments beginning in January 1992.
Phase SR (1992–2002)
Phase SR I (1992-1995)
The first prototype was tested in January 1989. It debuted in 1991 with two pre-production models as the pace car for the Indianapolis 500 when Dodge was forced to substitute it in place of the Japanese-built Dodge Stealth because of complaints from the United Auto Workers, and went on sale in January 1992 as the RT/10 Roadster.
The centerpiece of the car was its engine. Lamborghini, then owned by Chrysler Corporation, designed the V10 for the Viper by recasting the block and heads in an aluminum alloy, and was based on the Chrysler LA V8 engine. A major contributor to the Viper since the beginning was Dick Winkles, the chief power engineer, who had spent time in Italy.
The engine weighs 711 lb (323 kg) and produces 400 bhp (300 kW) at 4600 rpm and 465 lb·ft (630 N·m) at 3600 rpm, and thanks to the long-gearing allowed by the engine, provides fuel economy at a United States Environmental Protection Agency -rated 12 mpg ‑US (20 L/100 km; 14 mpg ‑imp ) city and 20 mpg ‑US (12 L/100 km; 24 mpg ‑imp ) highway.  The body is a tubular steel frame with resin transfer molding (RTM) fiberglass panels. It has a curb weight of 3,284 lb (1,490 kg) and lacks modern driver aids such as traction control and anti-lock brakes. It completes a quarter mile (402 m) in 12.6 seconds and has a maximum speed of over 150 mph (240 km/h). Its large tires allow the car to average close to one lateral g in corners, placing it among the elite cars of its day. However, the car proves tricky to drive at high speeds, particularly for the unskilled.
The car is spartan, although it features inflatable lumbar support and adjustable seats. Along with the absence of exterior door handles, the vehicle lacks side windows and a roof. Although a soft top cover was available, it was designed primarily for indoor vehicle storage. Side curtains of fabric and clear plastic operated by zippers can be inserted into the door and hand-bolted when needed. All of these decisions were made to reduce weight. The battery is located in the sealed compartment over the rear wheels to increase rear-end weight and traction. The car shipped with a tonneau cover and video tape on soft-top assembly (the soft top is removable and folds to fit in the trunk). In 1994 the car came, for the first time since release with several options available to the buyer. These included air conditioning, adjustable suspension, larger diameter wheels to accommodate larger brakes, and a fiberglass hardtop for the roof.
- 0-60 mph (97 km/h): 4.6 sec 
- 0-100 mph (160 km/h): 9.2 sec
- quarter mile: 12.0 sec @ 113.8 mph (183.1 km/h) 
- top speed: 165 mph (266 km/h) reference:
- 700 ft (210 m) slalom: over 66 mph (106 km/h)
- skidpad average g: 0.96
Phase SR II (1996–2002)
Although the 1996 model year is the beginning of the second generation, in the Viper community, the 96 RT/10 is sometimes referred to as generation 1.5 since it saw the carryover of many generation 1 parts during the model year while transitioning to generation 2 parts. The roadster relocated the exposed side exhaust pipes to a single muffler at the rear exiting via two large central tail pipes during the middle of the model year. Dodge said the reduced back pressure increased the horsepower to 415 bhp (309 kW; 421 PS) for the 96 RT/10. Torque would also increase by 23 lb·ft (31 N·m) to 488 lb·ft (662 N·m). A removable hardtop was now available along with a sliding glass window. Some steel suspension components were replaced by aluminum, resulting in a 60 lb (27 kg) weight reduction. 
Later in the 1996 model year, Dodge introduced the GTS, a new coupe version of the Viper. Dubbed the “double bubble”, the roof featured slightly raised sections that looked like a bubble to accommodate the usage of helmets and taking design cues from the Pete Brock designed Shelby Daytona.  More than 90% of the GTS was new in comparison to the RT/10 despite similar looks. The GTS would come with the same 8.0 liter V-10 engine but power would be increased to 450 hp (336 kW). The 96 GTS would be the first Viper to be equipped with airbags and also included air conditioning, power windows and door locks.
The 1996 Viper GTS would be chosen as the pace car for the Indianapolis 500.
Minor updates would continue in 1997 and 1998. In 1997, the RT/10 would receive the 450HP GTS engine along with air-bags and power windows. 1998 Vipers were equipped with second-generation air bags, revised exhaust manifolds (saving 24 lbs over the previous cast iron components) along with a revised camshaft.
For 1999, Dodge introduced the first ACR package. For this package the air intake was redone, the A/C and radio were deleted, and the suspension was swapped out for adjustable shocks. It is noted that most of the ACRs had the A/C and radio installed for additional costs. The Viper base package received 18 inch wheels, power side mirrors and a handful of other interior upgrades.
In 2000, the Dodge Viper updated to lighter hypereutectic pistons and factory frame improvements. While the hypereutectic pistons provided less expansion, the forged pistons are preferred for the supercharging and turbo aftermarkets. TSB (Technical Service Bulletin) recalls (998 and 999) were done at local dealerships to repair the 1996 to 1999 Viper frames by adding gussets with rivets near the steering box. 2001 saw the addition of ABS.
2002 would be the final year of the second generation Viper. Dodge would build 360 “Final Edition” Vipers (326 coupes and 34 ACR editions) to commemorate the final year. These models are painted red with white stripes, paying tribute to the famous race-winning Oreca cars. The RT/10 was replaced by the SRT-10 in 2003 and the GTS was replaced in 2006 by the SRT-10 coupe.
Colors and trim
Colors would vary throughout the second generation. Dodge would offer three or four colors per model year. Some colors such as steel gray were only offered for one model year (MY2000) while other colors such as red were offered during the entire second generation. Interior colors and wheel options would also vary throughout the second generation. The cobalt blue colour of the Dodge Viper GTS seen in the Viper (TV series) was exclusively available to the series.
Stripes would be an option beginning in 1996. The GTS stripes were larger, fuller stripes than the stripes offered on the 96 RT/10. The GTS had twin stripes (8 inches wide with a 4-inch gap in between) that ran from the front bumper all the way through the rear bumper. 1996 was the only model year the stripes would run through the rear license plate area. Stripes on later models would run from front to rear but did not run through the rear license plate area.
Performance (GTS) (RT/10 from 1998–2002)
Dodge Viper second generation, Phase II SR
- 0-60 mph (97 km/h): 4.0 sec 
- 0-100 mph (160 km/h): 8.6 sec
- quarter mile: 12.2 sec @ 119 mph (192 km/h) 
- top speed: 185 mph (298 km/h) 
- slalom: 73.6 mph (118.4 km/h) 
- skidpad average acceleration: 1.01 g (9.9 m/s²) 
Extensive modifications included a reworked engine with higher power and less weight, an almost completely redesigned chassis that was made 60 lb (27 kg) lighter and 25% stiffer in torsional rigidity through meticulous computer analysis, a thoroughly redesigned suspension, and reduced braking distances; the 1996 to 2002 Viper GTS had a lighter (approximately 650 lb (290 kg)) 450 bhp (340 kW) engine, which could complete the quarter mile in 12.3 seconds, 0.3 seconds and 6 mph (9.7 km/h) faster than its predecessor, and increased top speed by 11 mph (18 km/h) or so. The revised suspension, stiffer chassis, and aerodynamic body raised lateral grip to 0.98 g (9.6 m/s²), although other reports show the 1992 model with 1.0 g. Contemporary tires have improved upon this measure significantly. Slalom runs could often reach or exceed 70 mph (110 km/h). Brakes once again lacked ABS initially, and proved to be the car's weakest point. The brakes hurt the car in numerous comparison tests, such as a 1997 "supercar comparison" by Motor Trend, in which the Viper GTS placed at the top against cars such as the Ferrari 355, Chevrolet Corvette, Porsche 911 Turbo, Acura NSX-T, Mitsubishi 3000GT, and the Toyota Supra in all performance exercises except braking. The car not only placed last, but had considerably longer stopping distances than other vehicles. In a Sports Car International comparison conducted in 2002, the Viper ACR (with ABS) was compared to the 911 GT2 at Thunderhill Raceway Park. Both cars were very capable, and quick around the test track, but the Viper proved more difficult to drive, and the braking system was blamed very specifically for the gap in lap times (approximately GT2: 2 minutes, ACR: 2:04) between the two cars. Anti-lock brakes were introduced in 2001,  though braking performance was not necessarily significantly improved.
Phase ZB (2003–2010)
Phase ZB I (2003-2007)
The Dodge Viper underwent a major redesign in 2002, courtesy of DaimlerChrysler's Street and Racing Technology group. The new Viper SRT-10, which replaced both the GTS and the RT/10, was heavily restyled with sharp, angled bodywork. The engine's displacement was increased to 8.3 L (506.5 cu in), which, with other upgrades, increased output to 500 bhp (370 kW) and 525 lb·ft (712 N·m). Despite the power increases, engine weight was reduced to about 500 lb (230 kg). The chassis was also improved, becoming more rigid and weighing approximately 80 lb (36 kg) less than the previous model. An even lighter and stronger chassis was planned, but was abandoned because of cost, and the initial model was a convertible. In 2004 Dodge introduced a limited-edition Mamba package; Mamba-edition cars featured black interiors, with red stitching and trim and price increased by about $3000. 200 Mambas were produced.
The Viper SRT-10 Coupe was introduced at the 2005 Detroit Auto Show as a 2006 model. It shares many of its body panels with the convertible, but takes its side and rear styling from the Competition Coupe. The coupe looks much like the previous Viper GTS and retains the "double-bubble" roof shape of the original along with the original GTS's tail lights, as well as offering the original GTS Blue with white stripes paint scheme on the initial run of First Edition cars like the original Viper coupe. The engine is SAE -certified to produce 510 bhp (380 kW) and 535 lb·ft (725 N·m). Unlike the original coupe, the chassis was not modified. This makes the coupe heavier than the convertible, and thus slightly slower to accelerate. Handling and high-speed performance are improved by the coupe's stiffer frame, reduced drag, and increased downforce.
No 2007 model Vipers were produced; instead, Chrysler extended production of the 2006 model while preparing the updated 2008 model.
Dodge Viper third generation (SRT-10 roadster) 
- 0-60 mph (97 km/h): 3.8 sec
- 0-100 mph (160 km/h): 8.36 sec
- quarter mile: 11.77 sec @ 123.68 mph (199.04 km/h)
- top speed: 189.5 mph (305.0 km/h)
- slalom: 70.4 mph (113.3 km/h)
- skidpad average acceleration: 1.05 g (10.3 m/s 2)
- 100–0: 274 ft (84 m)
Dodge Viper third generation (SRT-10 coupe)
- 0-60 mph (97 km/h): 3.7 sec
- 0-100 mph (160 km/h): 8.36 sec
- quarter mile: 11.77 sec @ 123.68 mph (199.04 km/h)
- top speed: 192.6 mph (310.0 km/h)
- slalom: 70.4 mph (113.3 km/h)
- skidpad average acceleration: 1.05 g (10.3 m/s 2)
- 100–0: 274 ft (84 m)
Phase ZB II (2008–2010)
In 2008, with the introduction of the 8.4 L (512.5 cu in) V10, the Viper produced 600 bhp (450 kW) at 6000 rpm and 560 lb·ft (760 N·m) at 4600 rpm, and also received better flowing heads with larger valves, Mechadyne cam-in-cam variable valve timing on the exhaust cam lobes, and dual electronic throttle bodies.   The rev limit could be increased by 300 rpm due to the improved valve-train stability from both the new camshaft profiles and valve-springs. The engine was developed with some external assistance from McLaren Automotive and Ricardo Consulting Engineers. Electronic engine control is developed by Continental AG; the controller can monitor the crankshaft and cylinder position up to six times during each firing and has 10 times more processing power than the previous unit.
Changes outside of the engine were less extreme, but with a distinction between the third and fourth generation, with changes of the engine hood. The Tremec T56 transmission was replaced with a new Tremec TR6060 with triple first-gear synchronizers and doubles for higher gears. The Dana M44-4 rear axle from the 2003–2006 model now has a GKN ViscoLok speed-sensing limited-slip differential that greatly helps the tires in getting grip under acceleration. Another performance upgrade was the removal of run-flat tires; the new Michelin Pilot Sport 2 tires increased grip and driver feedback and, along with revised suspension (springs, anti-roll bars, and shock valving), made the Viper more neutral in cornering.
The modifications made to the 2008 model year car were enough for Chrysler to make it distinct from the first SRT-10, and the 2008 model became known as Gen IV, just in time for release with Chevrolet's 638 hp (476 kW) Corvette ZR1. Another notable change was the reworking of the exhaust system; previous third-generation Vipers had their exhaust crossover under the seats which resulted in a large amount of heat going into the cockpit, which was done initially to help improve the car's exhaust note, since the first 2 generations of Viper, which had no crossover, were criticized for their lackluster exhaust notes. The 2008 Viper exhaust utilized a new exhaust system with no crossover, reducing the heat that enters the cockpit.
The electrical system was completely revised for 2008. Changes included a 180-amp alternator, twin electric cooling fans, electronic throttles, and completely new VENOM engine management system. CAN bus architecture has been combined with pre-existing systems to allow for regulatory compliance. The fuel system was upgraded to include a higher-capacity fuel pump and filtration system.
End of production
On November 4, 2009, Dodge Car Brand President and CEO Ralph Gilles had announced that the Viper would end production in the summer of 2010.
Dodge announced several special edition Vipers for the 2010 model year:
Voodoo edition: The Voodoo edition (31 copies were made) was a special take on the ACR edition which included special black paint and red striping. The Voodoo edition also had a unique interior and steering wheel as well.
1:33 Edition: The 1:33 edition was another take on the ACR edition which celebrates the then unofficial lap record at Mazda Raceway Laguna Seca. The 1:33 edition had black paint and red two-tone paint. The 1:33 cars have piano black trim inside and red accent stitching on the seats.
Final Edition: On February 10, 2010, Dodge began accepting orders for the Viper SRT10 "Final Edition" models. Only 50 of these units would be produced (20 coupes, 18 roadsters and 12 ACRs). "Final Edition" cars carried the special build code, "AXZ", and were to be the very last of the Viper cars. "Final Edition" Vipers were available in SRT10 Coupe and Convertible configurations.
July 1, 2010 brought about the end of production for the Generation 4 Dodge Viper. During an event hosted by Dodge and the Viper Club of America, the final production Gen 4 Viper, which was given a gold finish and accentuated by contrasting orange stripes, rolled off the assembly line and was presented before attendees of the ceremony. Its completion commemorated the end of the production run of the Gen 4 Viper.
The Dodge Viper ACR and ACR-X have retained a Nurburgring Nordschleife of 7:12 and 7:03, beating cars worth tenfold the price.
Performance (2008 base model)
Dodge Viper fourth generation, phase II
- 0–60 mph (0–97 km/h): 3.79 sec
- 0–100 mph (0–161 km/h): 7.6 sec
- quickest quarter mile: 10.92 sec @ 129.79 mph (208.88 km/h)
- top speed: 202 mph (325 km/h)
- slalom: 74.2 mph (119 km/h)+
- skidpad average acceleration: 1.05 g (10.4 m/s²)
- 100–0 mph (161–0 km/h): 270 ft (82 m)
Car and Driver magazine tested the car, and found a 0-60 mph (97 km/h) time of 3.6 seconds, a 0-100 mph (160 km/h) time of 7.6 seconds, and a quarter-mile time of 11.5 seconds at 126 mph (203 km/h). Dodge's claims for top speed are 197 mph (317 km/h) for the Roadster and 202 mph (325 km/h) for the Coupe. Car and Driver also tested the Viper's track performance, and managed a fast sub-3 minute lap time around Virginia International Raceway. The Viper's time, despite hot weather, was faster than the Corvette Z06, Ford GT, Nissan GTR, Porsche 911 Turbo, 911 GT3, and 911 GT2, Audi R8, and similar cars. According to Car and Driver and Motor Trend, the car's slightly adjusted suspension setup and new differential gave it cornering ability as sharp as before with better control, feedback, and response.
Phase VX (2013–2017)
Phase VX I (2013-2017)
At a dealer conference on September 14, 2010 in Orlando, Florida, Chrysler Group and Fiat CEO Sergio Marchionne was reported  to have concluded his remarks by unveiling a rolling 2012 Dodge Viper prototype. There would be no 2011 Viper. Quotes from the Detroit News from SRT CEO Ralph Gilles that hint to the future of the brand include:
- "The new Viper is not based on anything else".
- "The Viper cabin is very rearward and the hood is very long. Few cars in the industry are designed with those proportions anymore."
- "I want the new Viper to be a more forgiving car to drive and accessible to more people. We've never had stability control on a high-performance car, which is about to happen on the new car."
The Viper was also on display for one night only in Salt Lake City, UT at the 11th Viper Owners Invitational or VOI 11 from September 30, 2010to October 3, 2010 . Ralph Gilles was present, gathering feedback from the owners themselves on new, exterior design of the snake. The Generation-5 badge was unveiled as well at this event on each dining table in the hall.
In Autumn of 2011, Ralph Gilles announced that the next generation Viper would debut at the New York Auto Show in April 2012. The last Dodge Viper rolled off the assembly in August 2017. 
Preliminary specifications include following:
All-aluminum 8.4 L V10 rated 640 horsepower (477 kW; 649 PS) and at 600 lb·ft (813 N·m), Tremec TR6060 six-speed manual transmission with final drive ratio 3.55, 50 percent improvement in torsional stiffness over previous model, electronic stability control, traction control, 4-channel anti-lock brake system (ABS), carbon fiber and aluminum skin with .364 drag coefficient (Cd), Pirelli P Zero Z-rated tires, 4-piston Brembo brakes with fixed-aluminum calipers with vented 355x32mm diameter rotors, 20 mm lower seating position, 7-inch full-color customizable instrument cluster, Uconnect RA3 or RA4 Access in-vehicle connectivity system with optional SiriusXM Travel Link, Harman Kardon audio system, bi-xenon projector headlamps with white light-emitting diode (LED) daytime running lamps and LED turn signals, LED taillamps with integrating stop-and-turn illumination and snakeskin texture lens, five-spoke forged aluminum "Rattler" wheel with fully polished (standard), fully painted Hyper Black or fully painted low-gloss black finishes. Top speed of the SRT Viper is 208 mph (332 km/h) and it has 0-60 mph time of 3.50 seconds. It will be the first to feature Viper's third logo, nicknamed "Stryker".
The SRT Viper GTS includes leather upholstery, accented colors in seats, doors, center console and stitching; gun metal trim on the cluster bezel, HVAC outlets, window switch bezels, shifter base, park brake bezel and the integrated passenger grab handle on the center console; Sabelt racing seats with Kevlar and fiberglass shell, carbon-fiber hood, roof, decklid and aluminum door panels, split six-spoke forged aluminum "Venom" wheels with polished face and graphite-painted pockets (standard), fully painted Hyper Black or fully painted low-gloss black finishes. 
Optional SRT Track Package includes Pirelli P Zero Corsa tires, StopTech slotted two-piece rotors and ultra-lightweight wheels in Hyper Black or matte black finishes.
SRT offered two versions of the Viper; the SRT Viper and the GTS. The GTS is the premium model offering more creature comforts over the base model. The most notable exterior difference between the two models is the hood. The base model has six functional hood vents while the GTS model only has two. To commemorate the return of the Viper, in 2013 SRT offered a 'launch edition' package available on 150 GTS models. All launch editions were painted in Viper Blue with twin white stripes, came with a serialized dash plaque placed inside their cabins, and their interiors are swathed in Black Laguna leather with contrast stitching.
The only notable change for the 2014 model year was the addition of a third traction control mode for improved rain performance. 
Sales for the 2013 and 2014 Viper were poor. In October 2013, Viper production was reduced by 1/3 due to low sales and growing inventory. In April 2014, Viper production ceased for over two months due to slow sales.  Dodge addressed the issue by reducing the price of unsold 2014 models by $15,000 and announced the 2015 models would carry this new, lower pricing model. 
Dodge SRT Viper GTS has a power to weight ratio of 2.38 kg (5.25 lb) per horsepower. (2015 654ps / 645bhp model).
In 2015, the SRT brand was eliminated and the Viper was renamed the Dodge Viper. In 2015, the V10 received an extra 5 hp, raising the output to 645 hp, and the highway mpg improved to 20mpg.
Dodge introduced a new GT package to fill the gap between the base Viper and the GTS model. GT buyers get the two-mode, driver-adjustable suspension and five-mode electronic stability control system from the GTS, along with Nappa leather seats with Alcantara accents and contrast stitching.
In May 2014, the SRT brand was re-consolidated under Dodge, with former SRT CEO Ralph Gilles continuing as senior vice president of product design and also as the CEO and president of Motorsports. 
The SRT Viper has made several video game appearances in the Forza Motorsport franchise in both the road version and the race-spec GTS-R Model, as does in the Horizon titles (where only the road-going GTS is in those installments and not the GTS-R), Need For Speed: Most Wanted (2012), Need for Speed: Rivals in which the GTS variant is in cop form and the Time Attack (TA) being a racer as a pre-order exclusive, Need For Speed: No Limits, Need for Speed, Gran Turismo 6 in both the standard GTS and the launch edition models in the game, Real Racing 3, Driveclub as one of the DLC cars in the Downforce expansion pack, and Gran Turismo Sport with both the road-going GTS and the GT3-R. 
End of production
In October 2015, Fiat Chrysler announced that the Viper would end production in 2017.  Initially, Fiat Chrysler cited poor sales as a reason for discontinuing the Viper; however, other sources have stated the car is being discontinued because the Viper will be unable to comply with FMVSS 226, which will require side curtain air bags.  In July 2017, Fiat Chrysler announced they would be permanently closing the Conner Assembly Plant on August 31, 2017. 
Chrysler announced five special edition Vipers for the final model year of production. 
1:28 Edition ACR: In celebration of the 2016 Dodge Viper ACR production vehicle track record at Laguna Seca, Chrysler offered 28 examples of the 2017 Viper 1:28 Edition ACR. This will have the extreme aero package and carbon ceramic brakes, along with black exterior paint with red ACR stripes, 1:28 Edition badges inside and out, production ACR interior and a unique matching car cover with the owner’s name above the driver’s door. The 1:28 Edition ACR sold out in 40 minutes after it went on sale. 
GTS-R Commemorative Edition ACR: To commemorate the success of the Viper racing program starting back in the 1990s, the company will offer 100 examples of the 2017 Dodge Viper GTS-R Commemorative Edition ACR. This limited edition package will include the Extreme Aero Package, the carbon ceramic brakes and the exterior carbon package. Dodge then adds a pearl white exterior paint with Blue Pearl GTS stripes, American flags on the pillars, red seat belts, production ACR interior, a serialized dash plaque with the GTS-R logo and a matching car cover with the owner’s name over the driver’s door.
Voodoo II Edition ACR: The 2017 Dodge Viper VooDoo II Edition ACR is modeled after the 2010 Viper ACR VooDoo edition, with 31 examples slated for production. The new VooDoo II Viper will sport black exterior paint with a graphite driver’s stripe, the Extreme Aero Package, the carbon ceramic brakes, production ACR interior, unique exterior decals, a serialized dash plaque and another car cover with the owner’s name.
Snakeskin Edition GTC: While this package is based on the 2010 Snakeskin Edition ACR, this is the only 2017 Viper limited edition package that is not built on the modern ACR. Instead, Dodge will build 25 examples of the 2017 Viper Snakeskin Edition on the GTC model, adding the Advanced Aerodynamics package, the production GT interior, a serialized dash plaque and a custom car cover. The 2017 Viper Snakeskin Edition will feature Snakeskin Green exterior paint with a unique snakeskin patterned stripe package.
Dodge Dealer Edition ACR: Finally, the last limited edition package for the final year of the current Dodge Viper is the Dodge Dealer Edition ACR. This package is being offered specifically at the two leading Viper dealerships in the country - Tomball Dodge of Tomball, Texas, and Roanoke Dodge of Roanoke, Illinois – and production is limited to 33 units. The Dodge Dealer Edition ACR will feature Viper White exterior paint with a Competition Blue center stripe and an Adrenaline Red driver’s stripe, the Extreme Aero Package, the carbon ceramic brakes, the production ACR interior and a custom car cover with the owner’s name over the door.
The first generation, phase II SRT Vipers were exported to Europe, where they were sold as Chryslers.
The second generation, phase I ZB Viper was being sold in Europe during 2005–2006, the first model to be sold as a Dodge, as part of Chrysler's new sales strategy for the European market. In the United Kingdom it is referred to as a Viper, but it is actually sold as the Dodge SRT-10, as the Viper name is a registered trademark in the UK.  Prodrive currently handles the importation and modification of Vipers to meet European laws.
The all-new 2013 SRT Viper features a cruise control and controls on the steering wheel. UConnect Bluetooth phone with Bluetooth Audio streaming is standard, as is an 8.4-inch touch screen display like that on the Chrysler 300, Dodge Charger, and Dodge Journey. It also features an Alpine surround sound system and many exterior, interior, and wheel combinations. There is also a four-inch reconfigurable Thin-Film Transistor display in the gauge cluster to display important vehicle information, system messages, and has controls to turn the traction control, stability control, and other features off. It also has a "Track Mode" with a built-in track timer, "stoplight" countdown timer display, and other features. Power seats, keyless entry, and heated seats are also new options. A navigation system by Garmin is also an available option, as is Sirius-XM satellite radio and HD radio. A built-in HDD for storing music and photos JPEG and MP3 will also be included as standard equipment.
The American Club Racing (ACR) model was introduced in 1999, starting with the Viper GTS (Phase SR II).
This model had suspension and engine enhancements focused on maximizing performance in road racing and autocross environments. Horsepower was bumped to 460 hp (370 kW) in these models, while torque increased to 500 lb·ft (678 N·m). Weight was reduced by over 50 pounds (23 kg) by stripping the interior and removing other non-essential items such as the fog lamps (replacing them with brake ducts). The new stiffer, adjustable suspension removed another 14 pounds (6.4 kg) These models, which also have engine and handling modifications, has an "ACR" badge and 20-spoke BBS wheels.
A new ACR was added to the Viper line-up after the 2008 model year. Its upgrades were more drastic than the original, including street-legal racing tires (Michelin Pilot Sport Cups which Michelin describes as "Ultra-High Performance Sport tires"),  two-piece brake rotors, adjustable suspension, and significant aerodynamic revision. No engine modifications were made, so power and torque remain at 600 hp (450 kW) and 560 lb·ft (760 N·m) as in the standard SRT-10. The ACR is street-legal, and is similar to the MOPAR Viper that Dodge displayed at various auto shows. Weight was also decreased by 40 lb (18 kg) by using the "Hardcore Package", without AC, radio, speakers, amplifier, trunk carpet, hood pad or tire-inflator. Its aerodynamic upgrades produce up to 1000 pounds (4.45 kN) of downforce at 150 mph (240 km/h), or roughly 10 times the downforce the standard Viper SRT-10 can produce at the same speed. The interior was upgraded only by the addition of a beacon-tripped lap timer (Hardcore Edition Only).
The Viper ACR was built alongside the standard SRT-10 at the Conner Avenue plant in Detroit. The aerodynamic components were produced by Plasan Carbon Composites and assembled to the vehicle by Prefix Corporation located in Rochester Hills, Michigan. 
On September 14, 2011, on the Nürburgring Nordschleife, a 2010 Dodge Viper SRT10 ACR completed the sixth fastest production, street-legal car lap ever recorded with a 7:12.13 elapsed time.  Chrysler's press release claimed a new production car lap record, although three faster laps had been recorded more than two years earlier, albeit by very specialized low production vehicles.
At SEMA 2014 Dodge showed off a Viper ACR concept car. After lots of rumors and speculation, Dodge announced the. The car was eventually introduced in 2015. Specifications were released in the same month. The base price of the 2016 ACR was US$121,395 in the United States, CA$159,995 in Canada. 
The 2016 Viper ACR came in installed with a fresh all-new completely carbon fiber aerodynamic body kit, that included a new front splitter and a fixed carbon fiber rear wing, altogether producing a total of 680.5 kg (1,500 lb) of downforce at cornering. The 8.4-liter Viper V10 engine produced the same 645 hp (481 kW; 654 PS) and 600 lb·ft (813 N·m) as all other Viper trims. The brakes are from Brembo, with discs and calipers built specifically for it. The discs are now carbon ceramic, something all-new for the Viper series. The brake system contains 391 mm (15 in) discs with 6-piston calipers up front, and 360 mm (14 in) discs with 4-piston calipers down the rear. The tires it uses are from Kumho Tire, using a set of tires called the Kumho Ecsta V720 ACR, a variant of the V720 specifically built for the ACR.  The front tires are P295/25R19Z, slightly smaller than the regular Viper, and P355/30R19Z at the rear. Suspension system is made by Bilstein, which has 10 settings options for rebound and compression tuning for the dampers.
The options for the car are very diverse, like all other Viper trims. One example is the ACR Extreme Aero Package, which was the same package used to help the car break a total of 14 lap records in the 14 tracks, despite what Dodge and many other critics say.  The package included the addition of a removable extended front splitter extension, a new adjustable dual-element rear wing, four dive planes, six removable diffuser strakes, removable brake ducts, and removable hood louvers, and if removed, will reveal a hood gap. This helped the car produce an extra 227 kg (500 lb) of downforce in cornering, for a total of 907 kg (2,000 lb) of it. With this package, the car can top out at only 177 mph (285 km/h) instead of 191 mph (307 km/h) because of the massive downforce the car produces. At the top end speed, the car will produce 799.5 kg (1,763 lb) of downforce at acceleration, the most of any production car. 
The ACR took 14 lap records all across the USA as the fastest car to lap the track. 
Back in October 2015, the ACR gained a 7:01.67 with the Extreme Aero Package, which was run by SRT, and lapped by their test driver Dominik Farnbacher. Unfortunately, the lap is unofficial according to SRT. 
A crowdfund started by volunteer Russ Oasis in 2017 on the GoFundMe funding platform began crowdfunding to retake the lap record in the Nürburgring. Crowdfunding ended up being as high as $198,000.   He eventually found himself with support by 377 people, and sponsorship and assistance from Kumho Tire (tire supplier), Prefix Performance (logistics and parts supplier), ViperExchange (car loaners), and Fox Pro Films (lap filming). SRT test driver, racing driver, and former Nürburgring record holder Dominik Farnbacher returned to the track to help the group retake the record. Racing drivers Luca Stolz, Mario Farnbacher, and Lance David Arnold came in as well.  Their target was the second position car in street legal vehicles, the Lamborghini Huracán Performante, which made a 6:52.01 lap. The group went through three attempts, with the lap times of 7:03.45 (set by Dominik Farnbacher), 7:03.23 (set by Mario Farnbacher), and 7:01.30 (set by Lance David Arnold), respectively.    Their three day trip to Nürburg, Germany ended with a crashed Viper ACR. 
Despite the failure of surpassing the Huracán Performante, the team was still able to make the Viper ACR the fastest American, rear-wheel driven (with no additional assistance), and manual transmission car to go around the track. Their lap time also brought the car to sixth position for street legal vehicles. 
The GTC model was introduced in 2015, and as of 2017, has only been featured in the VX I phase Vipers.
It is still unknown what the meaning of GTC is.
Beginning in model year 2015, Dodge began offering a GTC model. The 2015-2017 Dodge Viper GTC has a customization program that offers 8,000 colors and 24,000 hand-painted stripes, 10 wheel choices, 16 interior trims, 6 aero options, and an undisclosed amount of standalone options to choose from. There are a total of 25 million possible build combinations.   
Ordering a GTC enrolls a customer in a unique VIP program called Viper Concierge, which according to Dodge, "offers an exclusive point of contact throughout the custom Viper build process." The Concierge process will start with the ordering stage, which will include Dodge sending customers a paint chip confirming the owner's choice. Shortly thereafter, Dodge will send buyers a 1:18-scale "speed-form" replica in their chosen custom colors, to confirm or deny the build. Once the buyer's color and option selection is locked-in, that car becomes a one-of-one Viper for that year – no other buyer will be permitted to build a Viper to the same specifications. 
The Time Attack (TA) model was introduced in 2013, and as of 2017, has only been featured in the VX I phase Vipers.
The TA model has two variants, 1.0 and 2.0, each from the different manufacturers the Viper was being sold from. The amount of 2015-2017 TA 1.0 and 2.0 are still being added up but the numbers are relatively low, even for Vipers. To add to the confusion, the full TA 1.0 or 2.0 package could be added to the GTC one of one configuration which resulted in a 1 of 1, numbered TA car. Also, besides the original run of 2014 TA 1.0 with the production number being stated as xx/33 (or xx/93 for the orange TA 1.0). The TAs built from 2015 to 2017 were numbered in sequence. For example, #11 was built in 2015 and #22 in 2016.
The 1.0 was sold by SRT and was made as a small enhancement for the Viper GTS.
The car's data stays the same, 640 hp (477 kW; 649 PS) and 600 lb·ft (813 N·m), but the top speed drops to 193 mph (311 km/h) because of the car's aerodynamic additions. 
The car now has the addition of the Advanced Aerodynamic Package (two-piece front corner splitters and a rear decklid spoiler made from carbon fiber), lightweight Sidewinder II wheels finished in matte-black, Pirelli P Zero Corsa tires, two-mode (Street and Race) Bilstein DampTronic suspension adapted from the GTS, but with firmer levels of damping and a smaller spread between modes, shock dampers, increased spring rates and thicker anti-roll bars, carbon fiber underhood X-brace (instead of the aluminium brace in all other models), carbon fiber rear tail light applique from the Exterior Carbon Fiber Accent Package, two-piece Brembo brake rotors with wider brake annulus, black-anodized Brembo brake calipers painted with the Viper logo in TA Orange, TA logos behind both front wheels and a Stryker decal instead of the standard badge on the hood (TA Orange on the Venom Black cars, black on the TA Orange and Venom White cars), black interior with TA Orange accent stitching on the ballistic cloth seats, instrument panel & cowl, center stack, console, hand brake, shifter boot, and door panels. The aerodynamic package adds 200 pounds (90.72 kg) of downforce at 100 mph (160.93 km/h). Top speed is 193 mph  (310.60 km/h) instead of the non-aerodynamics package cars' 206 mph (331.52 km/h). The car's mileage is 12 mpg in city, and 19 mpg in highway.
On March 18, 2013 MotorTrend tested the SRT Viper TA in Mazda Raceway Laguna Seca, setting the production car lap record in 1:33.62, besting the previous lap time holder Chevrolet Corvette ZR1's 1:33.70. 
Even with the release of the TA 2.0, the 1.0 was still available as a package.
The TA edition returned for the 2015 model year called the TA 2.0 (but the TA 1.0 was still available up to and including the last model year, 2017). This model was sold by Dodge. 
The 2.0 part of the moniker refers to the updated aero package, which incorporates a bigger rear wing, new front dive planes, and a new carbon-fiber front splitter. The package improves downforce to 400 pounds at 150 mph versus the 2014 Viper TA's 278 pounds at 150 mph. The internal parts have also been improved, with a much better suspension setup, new two-piece Brembo rotors, and improved shocks, dampers, springs, and stabilizer bars. The car also has an improved X-brace. 
The car's data also stays the same like the 1.0. However, the data is based on the Dodge version of the Viper, not the SRT version, which means the car's data is 645 hp (481 kW; 654 PS) and 600 lb·ft (813 N·m). Unlike the 1.0, the car is able to keep the 206 mph (332 km/h) top speed. The car's mileage is improved in the 2.0 version, with a 13 mpg in city, and 20 mpg in highway. 
Viper GT2 Road Car
In order to meet FIA homologation requirements, as well as to celebrate Chrysler winning the 1997 FIA GT2 class championship, 100 modified Viper GT2 Championship Edition street-legal cars were sold. These upgraded GTS cars were rated at 460 hp (343 kW) and 500 lb·ft (678 N·m) of torque. They had bodywork with similar appearance to the GTS-R, with the same color scheme, aerodynamics package, and visual options, in order to publicize the Viper's achievement in the FIA GT Championship. 
To commemorate the end of the Phase ZB II Viper and mend the gap from the car's production end until the release of the new car, Dodge offered an improved version of the ACR specifically designed to run in the Dodge Viper Cup Series. This car, named Viper ACR-X, added to the basic ACR 40 hp (30 kW), a new set of downforce-enhancing front canards, long tube headers from American Racing Headers, and new materials that, along with a stripped interior, reduced weight to 3,300 lb (1,500 kg). It is a purpose-built race car, and is not street-legal. According to Dodge, the car beat the regular record-holding ACR around Mazda Raceway Laguna Seca by about three seconds (1:33.9 to 1:31). Price increased by US$12,000, to $110,000. Production was planned for the spring of 2010.  As of February 17, the Viper ACR-X's Nürburgring lap record is 7:03.058, a full 9.072 seconds faster than the regular ACR. 
Alfa Romeo Zagato TZ3 Stradale
The TZ3 Stradale is the fourth model in Zagato's TZ line and serves as Zagato's tribute to the 100th anniversary of Alfa Romeo. The car itself is based on the Viper ACR-X but with a new carbon fiber body. As planned, only 9 vehicles will be built. Not only is the chassis and powertrain from the Gen IV Viper, but the interior remains mostly the same as well.
The car uses many Viper components. The Fighter uses the 8.4-liter V10 engine from the Viper, and produces 525 hp (391 kW; 532 PS) with the regular model, and 628 hp (468 kW; 637 PS) with the S version. The weight of the car is 1,600 kg (3,527 lb). The power is delivered to the rear wheels through a 6-speed manual transmission, which is also Viper-derived. 
Only 13 Fighters were ever produced from its 2004-2011 production.
The Devon GTX is an American sports car by Devon Motorworks, which was intended to enter production but was denied by Chrysler since it didn't reach the construction goal of US$10 million, which meant the car remained a concept.
The GTX is based almost entirely from the Viper, albeit with a few changes. The exhaust system has been changed into Devon's own stainless steel variant, a revised intake system, a new one-piece carbon fiber superstructure, carbon fiber body panels, new cast-aluminum unequal-length front and rear suspension wishbones, new coil-over shocks, and StopTech race-inspired aftermarket brakes. The GTX was also intended to produce 650 hp (485 kW; 659 PS) at 6100 rpm from the Viper-derived 8.4-liter Viper V10. 
Prefix Viper Medusa Roadster
The Prefix Viper Medusa Roadster is a convertible conversion package available for the Viper.
Prefix unveiled the Viper Medusa Roadster at a private event at their Prefix Coatings facility in Auburn Hills, Michigan on July 19, 2014. Created under their latest division named Prefix Performance, the Medusa is a conversion of an existing Gen V Viper. The initial run is limited to 10 custom numbered vehicles at a price of $35,000 on top of the price of the vehicle. 
VLF Force 1 V10
The Force 1 is heavily based on the Dodge Viper, using its chassis and Viper engine, and also has a similar design language. The car's Viper-derived V10 puts out 745 hp (556 kW; 755 PS). According to the company, it can also do 0–60 mph (0–97 km/h) in a flat 3.0 seconds and top out at 218 mph (351 km/h).
Viper GTS-R Concept
Ten years after the first Viper Concept was revealed, the 2000 GTS-R concept was shown. Osamu Shikado was responsible for the vehicle's exterior which is 3 inches lower and 2 inches wider than the production Viper at the time. Shikado used race inspired lines with an aggressive stance. Some of these design cues were adapted to the 2003 production Viper. These included a higher belt line, a side gill, 'bump-up' rear fender shape, and a more defined side crease. Viewed from above, the front-to-rear stripe now is tapered.
Unlike most concepts, the 2000 Viper Concept was made as a complete car. It features a complete functional interior with air conditioning, adjustable pedals, and a premium sounds system. Only one 2000 GTS-R Concept was made featuring a dry-sump engine producing 500 horsepower, fifty more than current production, and 500 lb-ft of torque. The body is a single moulding of carbon-fibre, but with some subtle changes compared with the existing cars. An inch and a half has been taken out between the sill and the roof, which together with a chassis sitting two inches lower, gives the car a lower profile. Three inches have been added to the wheelbase and two inches to the track. The doors have also been lengthed, which combined with the longer wheelbase makes entry and exit from the car easier. Brakes are 14-inch ventilated discs with four-piston calipers and the front has the 19-inch wheels with P285/30 ZR Goodyear tires up and 20-inch rear wheels with P335/30 ZR tires.
Mopar Concept Coupe
A prototype 2008 Mopar Viper Coupe, with 675 hp (503 kW), appeared at the 2007 North American International Auto Show, but is not planned for production. This concept appears to have been a sneak peek at the Viper ACR. Performance parts from this car are sold by Mopar.
For the 2003 SEMA show, Chrysler displayed a highly tuned Viper SRT-10 in coupe form. The vehicle's name comes from the carbon fiber used to reduce the weight by 150 lbs (total down to 3200 lbs). However, even more significant were the engine modifications, which increased power to 625 hp; no torque or RPM figures were given. Along with the carbon fiber hardtop, a front splitter and rear spoiler were added; however those parts were not nearly as significant as those on the later SRT-10 ACR, and no downforce/drag information was provided to show that they were even functional. The car was only a concept.
This car was used as a test mule for the development for the Generation V SRT Viper. The car is no longer a show car, and most of its specialty parts were taken off during development for the new Generation V SRT Viper.
The Chrysler Firepower was a grand touring concept based on the Viper chassis that would have been equipped with the Hemi V-8, with automatic transmission. Price would have been slightly lower than other models.
The Dodge Copperhead was a concept car based on the Viper platform that was intended as a cheaper, more agile car. It was powered by Chrysler's 2.7 L LH V6 engine instead of the Viper's V10, which produced 220 hp (164 kW; 223 PS). It never reached production. Dodge produced a limited-production Copperhead Edition Dodge Viper, with copper-colored paint similar to the concept car and other changes.
The SEMA concept car is a version of 2013 SRT Viper coupe demonstrating Mopar products for SRT Viper. Changes include yellow body colour, carbon fiber parts at underhood, exposed carbon fiber performance cross X-Brace trimmed in a satin finish, a decal-cut Viper "Stryker" logo in the center of X-Brace, engine cover in carbon fiber and aluminum with the SRT logo, prototype aluminum oil filler cap with the SRT logo, a carbon fiber aero package, Mopar coil springs, full black interior with yellow accents, Sabelt hard-shell seats with a six-point safety harness, seat edging in black Katzkin leather with yellow accents in the perforations, Mopar billet aluminum shift knob, billet aluminum HVAC bezels and controls, carbon fiber bulkhead satchel with a universal integrated quick-release camera mount, polished chrome door-sill guards with the Viper logo, race-inspired sand-blasted aluminum Mopar bright pedal kit with the Viper logo etched in the pedals, footrest pedal with "Stryker" logo, optional "Track Pack" wheels finished in hyperblack, a front tow hook and an LED fog lamp kit.
Viper Television Series (1994–1998)
Chrysler launched a TV series called Viper in 1994 to serve as a promotional tool for the Viper. The show ran until 1998 with 1 NBC season and 3 syndicated follow-up seasons. Viper is a TV series about a special task force set up by the federal government to fight crime in the fictional city of Metro City, California that is perpetually under siege from one crime wave after another. The weapon used by this task force is a grey assault vehicle known as The Defender that masquerades as a Dodge Viper RT/10 roadster (and later, the Viper GTS coupe). The series takes place in "the near future". The primary brand of vehicles driven in the show were Chrysler or subsidiary companies. The series ran on NBC for one season in 1994 before being revived two years later for three more seasons of first-run syndication. Reruns of the series have appeared on Sci-Fi Channel and USA Network.
The Viper Defender "star car" was designed by Chrysler Corporation engineers unlike most Hollywood Film/TV cars that are usually customized by film picture designers. The car was built on a heavily modified RT/10 Chassis and is a completely functional prototype. Only 14 Defenders were made. The exterior design of the car was produced by Chrysler stylist Steve Ferrerio.
The Defender is a fictional assault vehicle that is said to be a highly sophisticated vehicle (contrary to the normal Viper's spartan nature) that can, at the flick of a switch, transform from a red RT/10 (later a blue GTS) into a grey/silver weaponized armored coupe.
Phase SR II
In 1996, a race car based on the Viper was built, and was called the Chrysler Viper GTS-R (in American races, was named the Dodge Viper GTS-R). The construction was done by Chrysler and by the teams Reynard Motorsport and Oreca. The numbers the car used were vast, with numbers like #91, #51, #2, #92, and #52.
The car was unveiled in 1996 at the IMSA GT Championship, with the team Canaska Southwind, which competed in the GTS-1 class, the highest for GTS classes. Its first race was at the 24 Hours of Daytona and managed to finish 29th position, but fortunately the team would improve greatly, finishing 12th position in the 12 Hours of Sebring. The car wasn't able to reach much further however, which meant the team had to switch to GTS-2. Oreca had planned for racing in the 24 Hours of Le Mans with their own GTS-R.
Both teams appeared at the Le Mans each with two entries. Three of those four cars managed to finish with Canaska Southwind earning the best result in tenth place. The two teams returned to their respective series afterwards. Oreca finished the year with three races in the BPR Global GT Series getting an eighth place at Brands Hatch, ninth at Spa, and sixth at Nogaro. Canaska Southwind concluded the season by finishing second in class at Mosport and sixth overall.
For the later years 1999 and 2000, the efforts made by Oreca had expanded, racing in both the ALMS and FIA GT Championship respectively, earning them nine wins, and one by the racing team Paul Belmondo. Another team named Chamberlain had improved to finish second overall in the FIA GT. Back at ALMS, Oreca had taken the title, with six wins. Later at Le Mans, Oreca would go on to win their second consecutive win, with the top six positions in every class being taken by various GTS-Rs. The GTS-R had made its first appearance in the FFSA GT Championship, and saw the first overall win for Zakspeed in the 24 Hours of Nürburgring. Oreca left the FIA GT in 1999 to focus on ALMS, leaving the privateers to race there, and got 11 races out of it for Oreca. They did lose to the then-new Corvette factory racing team, but still won the championship. Back at the FIA GT, the Viper racing teams won four races, but were outrun by the Lister Storm racing teams, with them winning five races for them. This let them settle for second and third. In the FFSA, the three teams DDO, ART, and MMI teams would win a total of eight victories.
The Oreca racing team had left competition to focus on Le Mans Prototype racing for 2001. The rest of the teams left at later years, and the Viper GTS-R began fading by 2004, then left completely by 2010.
In 2006, a modified Dodge Viper GTS-ACR driven by Greg Crick under the team Crickcars.com entered the Australian GT Championship and won it, with 713 points in total.
Phase ZB I
A new race car called the Viper Competition Coupe took the GTS-R's place for the second phase. The Viper Competition Coupe had the same 8.3-liter V10 engine as the street Viper, but increased power to 520 hp (388 kW; 527 PS), and 540 lb·ft (732 N·m) of torque.  The Competition Coupe had a carbon fiber composite body on a tubular steel frame with no interior trim and an FIA -legal roll cage. The exterior design of the Competition Coupe was based on the Viper GTS-R concept from 1999. Modifications to the mechanicals of the Viper were a 27-gallon fuel cell, differential cooler, ducted brakes, improved driver and engine cooling, trap door oil pan, low-inertia flywheel, an improved double-wishbone suspension system, new spherical bearing control arm attachments, two-way adjustable coil over dampers, and a driver-adjustable blade-type rear anti-roll bar. The anti-lock braking system added a distribution control system.  The initial price of the car is around $100,000. 
The Viper Competition Coupe was initially built for use in the Viper Challenge Championship one-make series starting in 2003.  The Competition Coupe was later adapted for use in the Group GT3 instituted by the FIA, allowing its use in a variety of series in Europe and North America. French racing team Oreca made further modifications to the car, to allow it to race in Group GT2. Privateer teams used these cars to compete for certain series, with Racing Box in Europe for the International GT Open and Woodhouse Racing and Primetime Race Group in the United States carrying out independent programs in the American Le Mans Series.
Phase VX I
SRT Viper GTS-R
The GTS-R returned in competition, but this time as an LM GTE class race car and instead, was constructed and designed by SRT Motorsports and Riley Technologies. It includes Michelin GT tires. The car retained the number #91 but had a new number for it called #93.
The vehicle was unveiled at the 2012 New York Auto Show, and it made its racing debut at the 2012 Mid-Ohio Sports Car Challenge where two GTS-Rs, driven by Kuno Wittmer and Dominik Farnbacher with car #91, and Marc Goossens and Tommy Kendall with car #93, finished 10th and 12th in the GT class, which was 23rd and 25th overall.
In 2014, with the ALMS folding and merging with the Rolex Sports Car Series, SRT soon entered the TUDOR United SportsCar Championship GTLM class. In the opening round, the 2014 24 Hours of Daytona, SRT took 3rd and 6th in class (12th and 27th overall, completing 675 and 653 laps respectively). Both cars were repainted at Watkins Glen in the red and white livery used in the late 1990s to early 2000s. The No. 93 Viper won class at Indianapolis Motor Speedway Brickyard Grand Prix in July 2014, after both cars took podium positions in the previous races at The Glen and Mosport.
In March 2014 Chrysler announced that it was withdrawing the Vipers from the 2014 24 Hours of Le Mans.  The Vipers ended the season at Petit Le Mans with a team championship and driver's championship by Kuno Wittmer. Following the end of the 2014 season, Chrysler discontinued the factory program by SRT Motorsports.
SRT Viper GT3-R
The Viper GT3-R was made available for race teams in the later half of 2013 at an estimated cost of $459,000.  The car shares many technologies with the GTE race car but it is built to Group GT3 regulations.
The GT3 car was jointly developed by SRT Motorsports and Riley Technologies and the car features the same 8.4 L engine from the road car and is capable of producing 680 hp unrestricted.  However actual output will be nearer 600 hp due to balance of performance employed in GT3 championships. The car weighs in at 1295 kg (2855 lbs) which is inside the 1300 kg limit for GT3 cars.
The first win for the GT3-R spec Viper came on July 13, 2014 in the Tudor United SportsCar Championship at Mosport  followed by a win in the Pirelli World Challenge at the Streets of Toronto in the second race on the 20th of July 2014.  Dutch Supercar Challenge squad Team RaceArt won the 2014 and 2015 Super GT class championship in a Viper GT3-R. 
Official lap records
Since the debut of the ACR series, the ACR has been setting records all around the world, with most of them in the USA. 28 of the 29 lap records have each been set by the ACR, with the last one made by the TA 1.0.
Phase SR II lap times
The first Viper ACR (Phase SR II) had only set just one lap record, in Willow Springs. This particular lap time was taken in 2008, in which it didn't make the fastest overall lap. The car did, however, achieve the fastest lap time for a 1990s car. 
|Willow Springs International Motorsports Park||1:34.90||unknown||ACR|
Phase ZB II lap times
The Viper SRT-10 ACR originally set 13 lap records back in its day. These laps were set by Gary Thomason and SRT drivers Dominik Farnbacher and Chris Winkler.
|Mazda Raceway Laguna Seca||1:33.92||Chris Winkler||ACR|
|El Toro||0:39.89||Gary Thomason|
|Gingerman Raceway||1:26.70||Dominik Farnbacher|
|Willow Springs International Motorsports Park||1:26.00|
|Willow Springs - Streets Of Willow||1:08.56||Steve Millen|
|Auto Club Speedway||0:53.43||unknown|
|Buttonwillow Raceway Park||1:55.70|
|Miller Motorsports Park||1:59.99|
|Nelson Ledges Road Course||1:08.90|
|Spring Mountain Motorsports Ranch||1:45.40|
|Virginia International Raceway||2:48.60|
Phase VX I lap times
In 2016, albeit Dodge and many other reports say the Viper ACR (Phase VX I) set 13 lap records, the ACR actually set a total of 14 lap records around the world, with all but one in the United States. All lap records made in US tracks are certified by the SCCA, making it the most lap records held for a Viper, and more memorably, the current world record holder for it.  This number became 15 after a crowdfunded lap record attempt in the Nürburgring Nordschleife, which is also the only lap record outside of the United States, where the car never took first overall, but became the fastest American, rear-wheel driven (with no additional assistance), and manual transmission car to ever lap the track.
The lap times are all set by American racing driver Randy Pobst, making two of the 15 lap records, German racing driver Lance David Arnold, making one the 15, and SRT driver Chris Winkler, who made the other 12 of the 15 records.
|Mazda Raceway Laguna Seca||1:33.62||Randy Pobst||TA|
|Waterford Hills Road Racing Track||1:10.89|
|Road Atlanta||1:26.54||Chris Winkler|
|Nelson Ledges Road Course||1:06.21|
|R&T Motown Mile||0:51.17|
|Pittsburgh International Race Complex||0:58.37|
|Virginia International Raceway||2:40.02|
|Willow Springs International Motorsports Park||1:21.24|
|Buttonwillow Raceway Park||1:47.70|
|Inde Motorsports Ranch||1:33.75|
|Chrysler Chelsea Proving Grounds||1:05.53|
|Nürburgring Nordschleife||7:01.30||Lance David Arnold|