
The SPEC Stage 4 clutch kit is listed for 2007–2010 BMW 335i and 135i applications and requires the SB53A-2 flywheel. It serves as the factory-replacement Stage 4 assembly for those model years; the product description provides explicit fitment and the flywheel reference needed to match the kit to the vehicle’s driveline during installation.
Spec 07-10 BMW 335i/135i Stage 4 Clutch Kit *Requires SB53A-2 Flywheel*