Spec Clutches Stage 4 Clutch Kit for SMFW (Non Sac) SB534-2, 2007-2012 BMW 135i / 335i SMFW = Single Mass Flywheel. Only needed for vehicles in excess of 500WHP/500TQ SPEC Clutch Kit - Stage 4: The SPEC Stage 4 Clutch Kit is a solid hub version of the stage 3. The hub is solid 8-rivet and the assembly is heat treated for strength and durability. It is available in a 3, 4 or 6 puck configuration. Use the 3 puck for the lightest option or the 6 puck for the smoothest engagement. The 4 puck is a good compromise for both. Street drivable in 6 puck configuration, but not street friendly due to the rigid hub. Best for drag racing, road racing, pulling, rallye and drift.
* High clamp pressure plate
* Carbon-Graphite Friction Material
* High torque solid hub and disc assembly
* Bearing and tool kit
*Types of Driving* Street, Drag, Pulling,
Autocross Part Number: SB534-2 Notes: Stage 4 Clutch Kit Manufacturer: SPEC Clutch Product Category: Clutches Torque Capacity: 580 *Requires SMFW* Not compatible with OEM DMFW *Built to order, 1-2 weeks on average* Spec Clutches Stage 4 Clutch Kit for SMFW (Non Sac) SB534-2, 2007-2012 BMW 135i / 335i