UMI Performance 2" Lowering Suspension Spring Kit 4 Springs BlackGM G-Body 1978-88 - Kit IMSA-SS-R1 also sends 2-3 times more

also sends 2-3 times more spark into the combustion chamber than a magneto

No CARB Exemption Order NumberRacers and nostalgic Ford enthusiasts using the famous Ford FE engine now have access to a distributor that is truly equal to the performance level of their engine

1977-1992 Pontiac Firebird

This box features all new inner working components with a re-manufactured housing

00" Sump Oil Capacity - 5

UMI Performance 2" Lowering Suspension Spring Kit 4 Springs BlackGM G-Body 1978-88 - Kit IMSA-SS-R1 also sends 2-3 times moreA spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. Our front springs are wound from 5160 CrSi premium wire and feature a linear 600 lb in rate. The rear springs are wound from 9254 CrSi premium wire and feature a linear 130 lb in rate. The linear rate provides consistent handling