Clutch Masters 06-10 BMW M5/M6 5.0L V10 6-Speed Lightweight Steel Flywheel
The 5.0L V10 in the E60 M5 and E63 M6 revs past 8,000 rpm, and the clutch and flywheel behind it take a beating, especially once the car has a few years of spirited driving on it. When the clutch is due on a six-speed manual car, many owners replace the flywheel at the same time with something lighter. The Clutch Masters FW-CM9-SF is a lightweight steel flywheel built for the 2006 to 2010 M5 and M6 with the six-speed manual, and it is designed to run with a Clutch Masters clutch kit.
The flywheel bolts to the back of the crankshaft and gives the clutch disc a flat friction surface to clamp against. Its mass also stores energy, which smooths idle and helps the car pull away. A lighter flywheel lets the V10 build and drop revs faster, which makes rev-matched downshifts quicker and the throttle feel sharper. The trade-off is that the car is a little less forgiving at very low rpm, so pulling away takes slightly more throttle. Steel was chosen here over aluminum for its durability: the friction face is part of the flywheel itself, with no bolted-in insert.
Clutch Masters describes FW-CM9-SF as a 267 mm upgrade that will only work with a Clutch Masters kit. In practice that means it is not a drop-in replacement for the factory flywheel with a factory clutch; the pressure plate and disc have to come from a Clutch Masters kit sized for this flywheel.
Most flywheel problems are found with the gearbox out. Look at the friction face under good light for heat checks, hard spots and grooves, and check the starter ring gear teeth. Before you pull the car apart, confirm that what you feel is the clutch and not something else in the driveline: our slipping diagnosis guide covers the roll-on test for slip, and the manual vs. automatic repair cost guide lays out what the labor runs. Because the labor to reach the flywheel is the expensive part, it pays to replace the clutch and flywheel in one visit.
Clutch Masters lists FW-CM9-SF for the 2006 to 2010 BMW M5 E60 and M6 E63 with the 5.0L V10 and six-speed manual. Most E60 M5s worldwide were built with the SMG automated gearbox, while North American buyers could choose the six-speed manual. This flywheel is for the manual cars only, not SMG. If you are unsure which gearbox your car has, send us the year and VIN and we will check before it ships. Browse the rest of our clutch parts in the clutch and rebuild kit collection.
Plan the flywheel and clutch as one job. Our Clutch Masters FX100 kit 03CM9-HD00-X is built for the same M5 and M6 six-speed cars; tell us you are pairing it with this flywheel and we will confirm the kit matches the 267 mm setup before shipping. Clean the crankshaft flange and flywheel mating face, fit new flywheel bolts, and torque them in steps in a crisscross pattern with a calibrated digital torque wrench to the value in the installation instructions. Check the rear main seal and the pilot bearing while the crank flange is exposed. Bleed the clutch hydraulics with fresh fluid of the type marked on the reservoir. Clutch Masters notes that lightweight flywheels and break-in both affect clutch life, so take it easy for the first few hundred miles and avoid high-rpm launches.
| Brand | Clutch Masters |
| Part number | FW-CM9-SF |
| Fits | Clutch Masters 06-10 BMW M5/M6 5.0L V10 6-Speed Lightweight Steel Flywheel |
| Vehicle fitment | BMW M5/M6 (2006-2010) |
| Type | Flywheels |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. Clutch Masters states FW-CM9-SF is a 267 mm upgrade that only works with a Clutch Masters clutch kit. Pair it with a Clutch Masters kit for the M5 or M6 six-speed.
It is listed for the 2006 to 2010 M5 E60 and M6 E63 with the six-speed manual. SMG cars use a different setup, so send us your VIN if you are not sure which gearbox you have.
The engine revs up and down faster, which sharpens throttle response and downshifts. Pulling away from a stop takes a little more throttle, and some owners notice more gear noise at idle.
A steel flywheel uses the flywheel itself as the friction surface, so there is no separate insert to wear out, and it can generally be resurfaced at a later clutch job if it stays within spec.
Use new flywheel bolts, inspect the rear main seal and pilot bearing, and bleed the clutch hydraulics with fresh fluid. Follow the torque values in the installation instructions.
