UMI Performance 98-02 GM F-Body K-Member - LS1 - Road Race VersionUMIs industry leading twin tube road race k member has gone to the next level. UMIs road race k member has been tested on auto x and road courses across the east coast. Our new adjustment plates feature a bulletproof locking mechanism which provides the ultimate in alignment retention. Laser cut plates lock the lower a arms into position for absolute confidence. Five positions of adjustment are available on the k member in addition to the adjustment