The Circuit Hero solid rear linkage bushing removes the slop and play of the factory rubber bushing at the end of the shift linkage. Using solid aluminum billet pieces allow more of a precise feel when shifting the transmission into gears. This two-piece design makes installation quick and painless. No modifications needed. Safe for road racing, auto crossing, drag racing, or even everyday spirited driving.Fits:1990-2001 Acura Integra (DA/DC)1988-2000 Honda Civic/CRX/Del Sol (EF/EG/EK)