This center cap only fits: JR10 wheels which originally have flat center caps

Clamp load 880Kg 25% Increased over standard

This BRA attaches to the PCV barb right behind the throttle body on the intake manifold

You can expect an increase of 1 to 2psi (peak boost) but the real improvement is in the mid-range

0L BMW N20 Turbo engine with a pneumatic vacuum actuator

Clutch Kit - Xtreme Performance Heavy Duty Cushioned Ceramic Incl Flywheel 840Nm KSU23506-1C JRX11 This center cap only fits:Xtreme Performance Cushioned Ceramic kit 1C Recommended for: Motorsport ApplicationsThese kits are available with cushioned ceramic friction discs and are designed for motorsport applications where higher heat and torque capacity is required. These can also be used in some road applications. Specifications: Torque capacity 840Nm Clamp load Increased over standard Cushioned Ceramic Friction Disc Heavy Duty Pressure Plate Kit contains everything you