SLP Street Legal Performance is a well-known American performance brand specializing in bolt-on upgrades for muscle cars, trucks, and performance vehicles. SLP built its reputation on delivering street-legal performance parts that improve horsepower, sound, and overall driving excitement while maintaining daily drivability.

This collection includes SLP exhaust systems, intake components, headers, pulleys, and performance accessories, including the popular Loud Mouth exhaust systems known for aggressive tone and reduced restriction. Designed for direct fitment and proven gains, SLP parts are ideal for enthusiasts looking to enhance performance, sound, and appearance without sacrificing reliability.