It is all about control

29mm in size

and provides a pressure/vacuum source to two ports

Aluminium Weld Flanges

Clutch Kit - Xtreme Performance Heavy Duty Organic Incl Flywheel & CSC 500Nm KGM26630-1A Ventiler It is all about controlXtreme 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 500Nm Clamp load Increased over standard Organic Friction Discs Heavy Duty Pressure