The kits come complete with a performance pressure plate

375' (64-86mm) supplied in packs of two

Brown/Purple 7psi Middle Spring and Brown/Blue 10psi Outer Spring (installed)

It is common to achieve 100 - 200% increases in boost over the base spring pressure

High Flow BOV5 Design for high boost and upgraded power levels

Clutch Kit - Xtreme Outback Extra Heavy Duty Cushioned Ceramic KFD24015-1CX Junior's The kits come complete withXtreme Outback Extra Heavy duty cushioned ceramic kit 1CX Recommended for: Motorsport Applications Xtreme Outback Ceramic upgrades have been designed to offer the ultimate in heat capacity for single plate upgrades and are designed specifically for motorsport applications such as endurance rally events and time trials. Available in Sprung Ceramic and Cushioned Ceramic, there are a wide variety of options to choose from depending on the vehicle use.