ACT Performance Street Sprung Clutch Disc | Ford Mustang 3.7L (11-17) (3001011)ACT Performance Street Sprung Disc 3001011 The ACT performance sprung disc 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