ACT BM14-XTSS Xtreme Performance Street Sprung Clutch Kit for Select 2007-2016 BMW (135i / 335i / 535i / 435i / Z4)

Fits select 2007-2016 BMW 135i, 335i, 335is, 435i, 535i, and Z4 sDrive35i models.

The ACT BM14-XTSS Xtreme Performance Street clutch kit is engineered for high-performance street use and track environments where increased clamp load and torque capacity are required. This kit features ACT’s Xtreme pressure plate, which utilizes an exclusive diaphragm design to significantly increase clamp load while reducing deflection. Every diaphragm undergoes a specialized four-stage heat-treating process to ensure consistent performance even under the thermal stress of aggressive driving.

The included Performance Street disc is built for durability and smooth engagement. It features a sprung hub to dampen driveline vibrations and premium organic friction materials with high copper content for superior heat transfer. Steel-backed linings provide high burst strength, while reduced marcel allows for faster, more precise gear changes. This combination delivers a firm pedal feel with the reliability needed for high-output N54 and N55 applications.

• Xtreme Pressure Plate: Precision cover stamping for maximum rigidity and consistency.
• Performance Street Disc: Sprung hub design with high-copper organic friction material.
• Heat Treated: Diaphragms are four-stage heat-treated for longevity and minimal load loss.
• Drivability: Quiet operation with a distinct, sporty pedal feel and rapid shift response.
• Manufacturer Part Number: BM14-XTSS