ACT BM12-XTR4 Extreme Race Rigid Clutch Kit - 4-Pad

The ACT BM12-XTR4 is a race-only clutch kit built around ACT's Xtreme pressure plate and a 4-pad rigid race disc, engineered for drivers who demand maximum power transfer and lightning-fast shifts under high-performance conditions. This kit features moderate to heavy pedal effort with aggressive, positive engagement — characteristics purpose-built for the track. Recommended for race use only.

Xtreme Pressure Plate:

• Exclusive ACT diaphragm design increases clamp load, reduces deflection, and maximizes clutch life
• Diaphragms undergo a four-stage heat-treating process for durability under sustained high-stress use
• Precision cover stampings provide rigidity and dimensional consistency
• Pedal effort increase of 50–80% over stock, depending on application
• 100% clamp load tested to ensure consistent, reliable performance

4-Pad Rigid Race Disc:

• High-quality ceramic friction materials selected for high heat tolerance and maximum grip
• Chrome-moly hub is heat-treated for strength and long-term durability
• Lightweight rigid construction enables quicker, more precise gear changes
• Engagement is firm and direct — faster shifting with a more aggressive feel
• Well-suited for smaller disc sizes typically found in smaller displacement engines
• Rigid design may increase spline wear over extended use — expected in race applications

Quality & Balancing:

• Dynamically computer spin-balanced to within 0.25 oz-in for smooth, reliable high-RPM operation
• Carefully engineered, precisely assembled, and accurately balanced from the factory

The ACT BM12-XTR4 clutch kit delivers the uncompromising performance that competitive racing demands. The combination of the Xtreme pressure plate and 4-pad rigid race disc makes this kit ideal for track-day and motorsport applications where engagement speed and torque capacity take priority over street drivability.