4-Pad Sprung Race Disc by ACT 4240518 is a 4-pad spring-centered race disc made with high quality, ceramic friction materials. The engagement is harsher, but shifting is faster. The heavy duty torsional dampening springs are stronger, in most cases, than standard springs and are provided in the best sizes and spring rates to suit the application. The race disc features a heat-treated spring steel drive plate and is well-suited for the smaller disc sizes in smaller engines. Features Feel – Aggressive engagement, quick shifts, OE to mild gear rattle Life – Premium ceramic friction materials provide moderate wear rates and high heat tolerance Quality – 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 Use – Recommended for race use only ACT Difference – High burst strength and holds 28% more torque than typical organic materials Applications 2006 – 2021 Subaru WRX 2004 – 2008 Subaru Forester XT 2005 – 2012 Subaru Legacy GT 2005 – 2009 Subaru Outback XT 2004 – 2006 Subaru Baja Turbo 2005 – 2006 Saab 9-2X Aero What\’s In The Box? 1 – ACT 4-Pad Sprung Race Disc References Installation Instructions Warranty Manufacturer Standard Warranty