This center cap only fits: JR37

The result is quicker spool-up and better performance on modern drive-by-wire vehicles

Full Electronic Actuation (Dual H-Bridge Input)

which connects to the vehicle's MAP sensor to obtain a reliable manifold pressure reference

Clutch Kit - Xtreme Performance Heavy Duty Organic Incl Flywheel KGM26505-1AF JR41 This center cap only fits:The Stage 1 clutch kit uses an upgraded pressure plate with increased clamping pressure, combined with an organic friction disc. Stage 1 delivers substantial increases in performance and power holding capability whilst retaining near factory type driveability, and is designed primarily for high performance road going vehicles. These kits feature a high quality cover with increased clamping force compared with standard, between 20 40% depending on the