ACT BM13-XTR4 Extreme Race Rigid 4-Pad Clutch Kit with Prolite Flywheel

The ACT BM13-XTR4 is a race-grade clutch kit built for the most demanding performance applications. This conversion kit pairs an ACT Xtreme pressure plate with a 4-pad rigid race disc and includes an ACT Prolite flywheel, delivering maximum torque capacity and lightning-fast shifts on the track. Recommended for race use only.

Xtreme Pressure Plate:

• Exclusive ACT diaphragm design increases clamp load, reduces deflection, and extends clutch life
• All diaphragms undergo a four-stage heat-treating process for exceptional durability under extreme conditions
• Precision cover stampings provide rigidity and consistency
• Expect a 50–80% increase in pedal effort compared to stock, depending on application
• 100% clamp load tested for verified clamping performance
• Dynamically computer balanced to within 0.25 oz-in for smooth high-RPM operation

4-Pad Rigid Race Disc:

• High-quality ceramic friction materials engineered for high heat tolerance and maximum performance
• Chrome-moly hub is heat-treated for strength and long-term durability
• Lightweight, rigid design enables quicker, more precise shifts
• Aggressive engagement characteristics optimized for racing environments
• Well-suited for smaller disc sizes used in smaller displacement engines
• Note: rigid design may increase spline wear and produces more aggressive engagement with increased gear rattle

Kit Includes:

• ACT Xtreme pressure plate
• ACT 4-pad rigid race disc
• ACT Prolite flywheel (conversion kit — ACT flywheel required)
• Flywheel bolts: M12-1.5 x 30mm
• Pressure plate bolts: M8-1.25 x 20mm

The BM13-XTR4 is carefully engineered, precisely assembled, and accurately balanced to deliver uncompromising performance on the race track. If you need maximum clutch performance and the fastest possible shift response, this is the kit built for the job.