ACT 4228218-1 Pad Sprung Race Clutch Disc - 4

The ACT 4228218-1 is a 4-pad spring-centered race clutch disc engineered for maximum performance in professional racing applications. Built with premium ceramic friction materials, this disc delivers aggressive, fast-shifting engagement and exceptional heat tolerance — making it the go-to choice for drivers demanding the most from their drivetrain on the track.

Key Features:

• Premium ceramic friction material provides moderate wear rates, high heat tolerance, and holds 28% more torque capacity than typical organic friction materials
• Spring-centered hub design properly dampens torsional vibrations for reduced driveline shock, quieter operation, and minimized spline wear compared to rigid-hub designs
• Heavy-duty torsional dampening springs are stronger than standard OE springs and are matched in size and spring rate to suit the specific application
• Wraparound spring windows and thicker retainer stampings reduce stress concentrations and increase overall structural strength and reliability
• Heat-treated spring steel drive plate provides superior support and durability, particularly well-suited for smaller disc sizes used in smaller displacement engines
• Aggressive engagement and quick shifts — expect OE to mild gear rattle, characteristic of race-spec hardware
• Recommended for race use only — not intended for street driving

ACT's race discs are designed for no-compromise performance on the track. The engagement is intentionally aggressive: take-off from a stop may produce judder and noise, which is normal behavior that does not affect clutch or drivetrain performance. For street use, ACT recommends an organic disc for smoother engagement and longer service life.