Performance Sprung Street Disc by ACT 3000212 is a performance street disc and the most popular disc purchased. It features premium organic materials with high copper content for better heat transfer. Performance street discs allow for quicker shifting and smooth engagement. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. ACT spring-centered assemblies use bushings and cone springs similar to factory clutch discs. This creates frictional dampening, which improves clutch life and reduces noise. Quiet operation with increased strength and reliability. Features Feel: Smooth engagement, quicker shifts, OE to mild gear rattle Life: Premium organic composite friction blended for high heat tolerance, increased burst strength, faster recovery from overheating and less wear of mating surfaces Quality: Spring retainers feature heat-treated wraparound spring windows that provide support and reduce stress concentrations that are common causes for failure Recommended Use: Recommended for street and race use ACT Difference: Steel-backed linings for higher burst strength, reduced marcel for quicker shifts Applications 2016 – 2018 Mazda MX-5 Miata 2.0L Specifications Product Weight (lbs.) – 3.3 SFI – 1.1 Input Shaft Diameter (Inches) – 15/16 Spline Count – 24 Disc Type – Sprung Street Disc Disc Diameter (Inches) – 8.8 Disc Diameter (mm) – 225 What\’s In The Box? 1 – Performance Sprung Street Disc Warranty ACT 12-Month Limited Warranty