PerformanceRigid Street Disc by ACT 3001204 is a street rigid disc featuring premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. The chrome-moly hub is heat-treated for strength and durability. Rivet design and materials are carefully selected for maximum strength. Lightweight, solid-hub design allows for quicker shifting and engagement. ACT\’s street rigid-hub discs provide race-proven performance with street manageability. Features Feel: Smooth engagement, quicker shifts, increased 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, rigid design may increase spline wear Quality: Chromoly hub is heat-treated for strength and durability Recommended Use: Recommended for high horsepower street or race use ACT Difference: Steel-backed linings for higher burst strength, reduced marcel for quicker shifts Applications 2005 – 2008 Audi S4 Base/Avant/Cabriolet 2007 – 2008 Audi RS4 Base/Cabriolet Specifications Disc Type – Rigid Street Disc SFI – 1.1 Disc Diameter (Inches) – 9.44 Disc Diameter (mm) – 240 Spline Count – 23 Input Shaft Diameter (Inches) – 15/16 Disc Material – Organic What\’s In The Box? 1 – Performance Rigid Street Disc Warranty ACT 12-Month Limited Warranty