ACT 3000502 Performance Street Sprung Clutch Disc Smooth engagement with reduced marcel for faster shift action and stock to low gear rattle Premium organic friction materials for heat tolerance, faster recovery from overheating and prevents warping of mating surfaces Spring retainers feature heat-treated wraparound spring windows that provide support and reduce stress concentrations that are common causes for failure Recommended for street and race use Modified with reduced marcel for faster shift action and has steel-backed linings for higher burst strength and quicker shifting and engagement