Clutch Masters FX250 Clutch Kit (Rigid Hub) - 135i/M235i/335i/435i/535i, 1M, Z4 35i (N54, N55)

Formula/organic friction disc has superior holding but with stock-like feel.

The Clutch Masters FX250 performance clutch for N54 & N55-powered models - E82 135i/1M, F22 M235i, E9X 335i, F30 335i, F32 435i, F10 535i, and E89 Z4 35i - uses their Formula friction material on one side and organic material on the other. This gives up to 110% more holding power but with near-stock engagement behavior. So it's easy enough to use every day but with extra capacity for heavily modded cars. Clutch Master's advanced pressure plate gives up to 110% more holding capacity without any more pedal pressure than stock. Clutch Masters is the most advanced BMW clutch upgrade on the market - offering more clutch options and design innovation than any other brand.

The pressure plate in the FX250 is the key to its impressive performance. Clutch Masters is the only US performance clutch brand to make their own pressure plates in-house (most other companies use a re-branded Sachs part). Not only does this let them control quality to a very high degree but they are able to design a new pressure plate from the ground up. Clutch Masters re-engineered pressure plate design to introduce their Hi-LeverageTM pressure plate with less pedal effort than other performance clutches. By moving the spring plate closer to the fulcrum point, less force is required to push on the diaphragm springs. Pressure plates are also over-built with extra retention straps and heavy-duty rivets - two of the common failure points on stock clutches.

The FX250 is best used on heavily-tuned 135i/335i models. It works best in a sport street, autocross, or light track environment where you want extra grip but the car is still driven often on the street. The hybrid clutch disc has easy engagement so it can be used in traffic and around town. But for dedicated track days the FX350 would be a better choice.

Kit includes hybrid organic/Formula (Fiber Tuff) clutch disc with rigid hub, Hi-LeverageTM pressure plate, HD throw-out bearing, and clutch alignment tool. A rigid (solid) hub disc should only be used with a dual-mass flywheel but can be used on single-mass flywheels too if more noise and vibration can be tolerated.