Custom Trikes by Stires was a California-based company founded around 1985, located in Garden Grove. The company specialized in converting motorcycles into custom three-wheeled vehicles, utilizing open fiberglass bodies for their designs.

The conversions maintained the original motorcycle front suspension while incorporating a wide two-wheeled arrangement at the rear. Notably, these trikes were powered by Volkswagen Beetle engines and transaxles, which contributed to their unique performance characteristics.

Among the models produced by Custom Trikes by Stires were the Scorpion, Stallion, Stinger, and Streak. These vehicles catered to a niche market, appealing to enthusiasts seeking a distinctive blend of motorcycle and automotive features.