# PDF. UMIs performance lowering springs are built to lower the 4th Gen rear approx. 1. 5 and increase the spring rates for a crisp handling experience. UMI rear lowering springs are Made in USA of 9254 CrSi wire in the rear and feature 200 lb in linear rear rate that reduces floating and body roll while still allowing for comfortable cruising and performance handling. Think of it as permanent sport mode! These springs work with the popular Konis and Bilsteins along with other factory style dampers. 100% designed and manufactured with pride in the USA. This Part Fits: Year Make Model Submodel 1988,1993 2002 Chevrolet Camaro Base 1982 1986 Chevrolet Camaro Berlinetta 1993 Chevrolet Camaro Indianapolis 500 Pace Car 1985 1990 Chevrolet Camaro Iroc Z 1987 Chevrolet Camaro LT 1989 1992,1996 1997 Chevrolet Camaro RS 1992 Chevrolet Camaro RS Heritage Edition 1982 1987 Chevrolet Camaro Sport 1982 1987,1991 2002 Chevrolet Camaro Z28 1992 Chevrolet Camaro Z28 Heritage Edition 1982 Chevrolet Camaro Z28 Indianapolis 500 Pace Car 1998 2002 Chevrolet Camaro Z28 SS 1982 2002 Pontiac Firebird Base 1989 2002 Pontiac Firebird Formula 1982 1986 Pontiac Firebird S E 1982 2002 Pontiac Firebird Trans Am 1994 Pontiac Firebird Trans Am GT 1989 1992 Pontiac Firebird Trans Am GTA 1989 Pontiac Firebird Trans Am GTA SE