Turbosmart also offers up to 40PSI springs

The Built-In Stainless Steel Mesh Oil Filter is serviceable and replaceable and is another layer of defence from debris in your engine oil damaging your turbocharger

the plastic becomes brittle and can crack

4 cylinder/V8: TS-0550-3098 ALV 4-1 Weld flange (4 outlet)

which can be challenging to install due to the high lock angles

Clutch Kit - Xtreme Performance Extra Heavy Duty Sprung Ceramic KMI22006-1BX BMW Turbosmart also offers up toXtreme Performance extra sprung ceramic kit 1BX Recommended for: Motorsport ApplicationsThese kits are available with sprung 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 Clamp load Increased over standard Sprung Ceramic Friction Disc Extra Heavy Duty Pressure Plate Kit contains everything you need