Advanced Clutch HD/Race Rigid 4 Pad Kit (HC9-HDR4) PPE_CeramicCoating_2 The headers with high-flow cats

The headers with high-flow cats show a 28-33whp gain

Factory style gaskets

Features a formed collector with spike or an optional parallel merge collector

Main Piping Size(in):4

ME3-HDR6 kit features ACT's most popular Heavy Duty pressure plate

Advanced Clutch HD/Race Rigid 4 Pad Kit (HC9-HDR4) PPE_CeramicCoating_2 The headers with high-flow catsHC9 HDR4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four stage, heat treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4 pad rigid race discs are made with high quality, ceramic friction