The Harbor City Boys 13 (HCB13) also known as the Harbor City Rifas 13 (HCR13), are largely a Mexican American street gang located in Harbor City. The Harbor City Rifas 13 has been active for over two decades, and has maintained a strong presence throughout the 1980s.

The Harbor City Rifas 13 originated around the Harbor Village Housing Projects, formerly known as the Normont Terrence Housing Projects.

Which, they share with the Harbor City Crips, an African American street gang who mainly feuds with Latino street gangs in Wilmington, Torrance and San Pedro.

The Harbor City Rifas 13 and the Wilmas 13 have been feuding since 1990.

Alegendly, a car full of Harbor City Boys drove to Wilmington, on a shooting spree looking for Wilma gang members. However, the Wilmas gave pursuit and followed them back to Harbor City, where another shootout took place, leaving one Harbor City Boy gang member dead.

The Harbor City Rifas 13 wanted revenge which contributed to a string of shootings along the Pacific Coast Highway, near the Harbor Village Housing Projects.

Law Enforcement there have been a total of 17 drive-by shootings, and 4 gang-related deaths in Wilmington and Harbor City between the two gangs.

The Harbor City Rifas 13 and the Eastside Torrance 13 are arch enemies, these 2 gangs have been feuding since 1998 causing a lot of bloodshed between both sides.

The Harbor City Boys 13 consists of several cliques that makes up their whole turf such as:

255th Street Baby Locos, 256th Street High Times, Tiny Locos, Pee Wees, and Lil Locos

The Harbor City Boys 13 have an alliance with the Harbor City Crips and the Dodge City Crips due to their common hatred towards the Eastside Torrance 13, 204th Street Gang, Wilmas 13 and the Rancho San Pedro Gang

The Harbor City Boys 13 archrivals are the Wilmas 13 and the Eastside Torrance 13, these gangs have been rivals since the 1990s, they also feud with 204th Street Gang and the Rancho San Pedro Gang.