4 Pad Sprung Race Disc by ACT Aggressive engagement, quick shifts, OE to mild gear rattle; Premium ceramic friction materials provide moderate wear rates and high heat tolerance; Utilizes wraparound spring windows, thicker retainer stampings and a heat-treated, spring steel drive plate to provide support, reduce stress concentrations and increase strength and reliability; Recommended for race use only; High burst strength and holds 28% more torque than typical organic materials Features Clutch Usage: Performance Input Spline Quantity: 22 Input Shaft Diameter: 0.937 in. Disc Diameter (in): 8.819 in. Disc Diameter (mm): 224mm Disc Material: Ceramic Disc Style: 4-paddle Hub Style: Sprung Benefits Aggressive engagement, quick shifts, OE to mild gear rattle Premium ceramic friction materials provide moderate wear rates and high heat tolerance High burst strength and holds 28% more torque than typical organic materials . Utilizes wraparound spring windows, thicker retainer stampings and a heat-treated, spring steel drive plate to provide support, reduce stress concentrations and increase strength and reliability Applications 1992-1994 Mazda MX-3 1996-2001 Kia Sephia 2000-2003 Kia Spectra 2006-2015 Mazda MX-5 Miata 1987-1993 Mazda B2200 What\’s In The Box? 1 – ACT 4 Pad Sprung Race Disc Warranty ACT 1-Year Limited Warranty