This part is intended to cover the additional TPMS hole if wheel has two air valve holes and car doesn't use TPMS

No more trial and error with with restrictors and orifice sizes

\n6psi Springs Pre-Installed

However this setup makes the car snappier and a little less predictable

Clutch Kit - Xtreme Performance Heavy Duty Organic 120Nm 370kg (60% inc.) KDA17013-1A Wheels cleaners This part is intended toXtreme Performance sprung organic kit 1A Recommended for: Street use in vehicles with minor engine modifications. Sprung organic clutch kits offer exceptional driveability for vehicles used daily but also have performance modifications. The sprung organic disc offers improved dampening which reduces the shock loading on the transmission. Specifications: Torque capacity 120Nm Clamp load 370kg 60% Increased over standard Organic Friction Discs Heavy