UPR Products

UPR was born on the dragstrips of South Florida, where Joe and Mark Mainiero were already building some of the fastest Mustangs in the country. When their 1,900hp 1995 GTS became the first car to break the 8-second barrier in True Street, it wasn't just a record — it was proof of concept.

That track knowledge became the foundation of UPR Products, formalized in 1998 and now operating out of a 20,000 sq ft campus in Lake Worth, Florida. Every K-member, control arm, and anti-roll bar is designed and manufactured in the USA, with decades of real racing data behind every decision.

Championship titles across NMRA, NMCA, and World Ford Challenge back up the claim. If it works at the track, it works on your build.