The SPEC P-Trim Super Twin clutch kit is a semi-metallic twin-puck clutch package with an aluminum flywheel for BMW 135, 335 and 535 applications from 2007–2009. The kit combines PT-Trim semi-metallic friction pucks and an aluminum flywheel to replace the factory clutch assembly and provide a firmer engagement characteristic common to twin-puck designs.
Spec 07-09 BMW 135/335/535 Super Twin PT-Trim Semi-Metallic Puck Clutch Kit w/Alum Flywheel