Clutch Masters FX500 Clutch Kit (Rigid Hub) - F22 228i, F3X 328i/428i

This is a very aggressive 8-puck single disc clutch with a rigid-hub disc, which should ONLY be used with dual-mass flywheel. It has a heavy duty pressure plate and disc is not only rigid, it's ceramic lined. 

If you've got a very modified N20 manual, and are planning on still using a dual-mass flywheel, this one-off close out deal may interest you! 

The rigid hub design is more reliable than sprung hub BUT can be tricky to use in daily situations. A rigid disc should be used with a dual-mass flywheel, but can be used with a single-mass if more noise and vibration can be tolerated. This disc is designed for outstanding holding capacity, and rapid heat dissipation.

Not recommended for regular street driven cars, this clutch is one of the heaviest single disc clutch options available, intended for drag race or competitive use.