The Clutch Masters CM 850 twin-disc clutch kit for 2014–2018 BMW M3 and M4 is a conversion kit supplied with release bearing that requires a Clutch Masters flywheel. It will not work with the OEM flywheel, and the flywheel is sold separately, so installation requires the matching Clutch Masters flywheel to complete the conversion. This kit is intended for builders seeking a multi-disc replacement specific to the stated M3/M4 years.
Clutch Masters 14-18 BMW M3/M4 Twin Disc Clutch Kit w/ Bearing (Flywheel Sold Separately)