All the metal components on RX8 rear suspension are from high strenght steel

Brown/Green 25psi Outer Spring and Brown/Orange 10psi Inner spring (installed)

The Stage 1 clutch kit uses an upgraded pressure plate with increased clamping pressure

Brown/Black 3psi Inner spring

Clutch Kit - Xtreme Performance Heavy Duty Organic KGM29494-1A JR11 All the metal components onThe 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