M3 Clutch Masters FX300 Clutch/Steel Flywheel Kit
Designer: Clutch Masters
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The Clutch Masters FX300 performance clutch & flywheel kit for the E46 M3 has a steel lightweight flywheel, segmented Kevlar disc that has more pressure than full-face discs and their Hi-LeverageTM pressure plate for up to 110% more holding power. The FX300 is for serious autocross or light track use with only small concessions for street use. Clutch Masters is the most advanced BMW clutch upgrade on the market - offering more clutch options and design innovation than any other brand. The steel flywheel in this kit is a bit heavier than aluminum but does a better job of dampening vibration and noise.
The pressure plate in the FX300 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 FX300 is best used on heavily-tuned naturally aspirated E46 M3 or with forced induction. It works best in a autocross or light track environment where you want extra grip and capacity and the car is not driven much on the street. The Kevlar disc does not engage as smoothly as organic or Formula discs but can be used for limited street use. A 500 mile break in is required and essential for a smooth engagement. For better street engagement without giving up clamping force, check out the FX350 kit.
Kit includes steel lightweight flywheel, segmented Kevlar clutch disc, Hi-LeverageTM pressure plate, HD throw-out bearing, assembly hardware, and clutch alignment tool.
E46 (99-05) > M3