ACT Heavy Duty Performance Street Rigid Clutch Kit | BMW 135/335/535/435/Z4 (07) (BM14-HDSD) Radiators Finished with a high-gloss

Finished with a high-gloss

The improved airflow supports smoother acceleration and better overall engine responsiveness

The diffuser's matte finish adds a refined

Fits 2008–2013 BMW E9X M3

ACT Heavy Duty Performance Street Rigid Clutch Kit | BMW 135/335/535/435/Z4 (07) (BM14-HDSD) Radiators Finished with a high-glossACT Heavy Duty Performance Street Rigid Clutch Kit Part #: BM14 HDSD Overview The ACT Heavy Duty Performance Street Rigid Clutch Kit is designed to enhance the durability and performance of your BMW 135, 335, 535, 435, or Z4 (07). This kit features ACT's most popular Heavy Duty pressure plate, engineered to provide increased clamp load and reduced deflection for improved clutch engagement and longevity. Crafted for enthusiasts who demand reliable