The SPEC Stage 4 clutch kit for 2000–2003 BMW M5 is an upgraded clutch solution specified to require the SPEC flywheel SB63S-2. Offered as a Stage 4 option for that M5 generation, the kit is intended for drivers seeking a higher-capacity single-clutch replacement while retaining the requirement to install the matching SPEC flywheel for correct operation.
Spec 00-03 BMW M5 Stage 4 Clutch Kit (Requires Spec Flywheel SB63S-2)