E9X M3 6MT 08-13 Aluminum Lightweight Flywheel

3 Series
E90 / E91 / E92 / E93 (06-13) > M3

Here’s a paraphrased version of the JB Racing Aluminum Lightweight Flywheel description for the E9X M3:

The JB Racing Aluminum Lightweight Flywheel is a high-performance upgrade for your E9X M3 that dramatically cuts down the stock flywheel’s heavy rotating mass. This reduction allows the engine to rev faster, making shifts feel sharper and rev-matching more intuitive—especially once you adjust to the reduced weight.

Specifically engineered for street-driven performance vehicles, this flywheel lowers both static weight and Moment of Inertia (MOI). That means quicker engine response and less effort required to spin the flywheel, translating into more power making its way to the wheels.

Made from billet aluminum in a single-mass design, each flywheel replicates OEM dimensions to ensure compatibility with the correct clutch components.* Every unit is built in-house at JB Racing using cutting-edge CNC machinery and goes through a full cycle of precision machining, balancing, inspection, and assembly.

JB Racing is trusted by elite race teams across the U.S. for their engine and driveline machining expertise. Their BMW flywheels are crafted with the same race-grade precision and quality—far beyond what you’ll find in average aftermarket offerings.

Standard features include:

• CNC machined and precision-balanced to prevent vibration
• Bolted-on, replaceable hardened steel clutch surface
• Heli-coil inserts to protect threads during clutch replacement
• OEM-style starter ring gear
• Hardened steel gaul plate to safeguard flywheel bolt areas
• Includes flywheel bolts, pressure plate bolts, and dowel pins
• Captive 10mm dowel pin design for secure alignment
• All metric pressure plate hardware
• Just 12 lbs vs. the stock 27.5 lbs
• Made in the USA

Clutch Compatibility:
Because this is a single-mass flywheel, it should not be paired with a factory clutch. We strongly recommend using a dampened performance clutch—such as the Clutch Masters FX100 or FX350 kits—for smoother engagement, reduced drivetrain noise, and better daily drivability.

Important Fitment Notes:

• 2008 Models: BMW used a different 6MT clutch and flywheel on M3s produced before September 2008. These parts have since been discontinued and replaced with 2009+ versions. If you’re upgrading a 2008 model, be sure to select a dampened E9X M3 6-speed clutch with a sprung hub.
• 2009–2013 Models: This flywheel is a direct fit with no additional parts required.

Clutch Pedal Spring Advisory:
BMW recommends replacing the clutch return spring (part #35006769442) during clutch service. Even if it’s already been updated, installing a fresh one is a good idea for optimal pedal feel.