Advanced Clutch HD/Race Rigid 4 Pad Kit (MB3-HDR4) PPE_CeramicCoating_1 MB1-XTSD kit features an Xtreme

MB1-XTSD kit features an Xtreme pressure plate for the most demanding driver

quick shifts

15 degree parallel merge collectors

Designed with 1 5/8" OD stepped to 1 3/4" OD primary tubes and a true race merge collector

Includes O2 sensor extensions

Advanced Clutch HD/Race Rigid 4 Pad Kit (MB3-HDR4) PPE_CeramicCoating_1 MB1-XTSD kit features an XtremeMB3 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