Perf Street Sprung Disc by ACT Smooth engagement, quicker shifts, OE to mild gear rattle; Premium organic composite friction blended for high heat tolerance, increased burst strength, faster recovery from overheating and less wear 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; Steel-backed linings for higher burst strength, reduced marcel for quicker shifts Features Product Weight (lbs.): 3.3 Disc Material: Organic Diameter (Inches): 8.8 Diameter (Millimeters): 224 SFI: 1.1 Benefits Smooth engagement, quicker shifts, OE to mild gear rattle Premium organic composite friction blended for high heat tolerance, increased burst strength, faster recovery from overheating and less wear of mating surfaces Spring retainers feature heat-treated wraparound spring windows that provide support and reduce stress concentrations that are common causes for failure Steel-backed linings for higher burst strength, reduced marcel for quicker shifts Recommended for street and race use Applications 1981-1984 Nissan Maxima 1980-1986 Nissan 720 1990-1992 Nissan Stanza 1975-1979 Nissan 620 1990-1990 Nissan Axxess What\’s In The Box? 1 – ACT Perf Street Sprung Disc Warranty ACT 1-Year Limited Warranty