ACT Clutch MS1-XXR4 Features:

MS1-XXR4 kit features a MaXX pressure plate for the serious enthusiast. ACT MaXX 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 materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. With the 4-pad rigid race disc, engagement is harsher, but shifting is faster. The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.

• Includes Clutch Release Bearing (RB422), Clutch Pilot Bearing (PB1002), Clutch Alignment Tool (AT03), Clutch Friction Disc (4240008), Clutch Pressure Plate (MZ010XX)
• Heavy To Very Heavy Pedal Effort
• Aggressive Engagement
• Quickest Shifts
• Increased Gear Rattle; Moderate Friction Life
• Extended by ACT's Exclusive Diaphragm Design
• Rigid Design May Increase Spline Wear; Carefully Engineered
• Precisely Assembled
• Accurately Balanced
• Uses Select Ceramic Friction Materials For High Heat Tolerance And Maximum Performance; Recommended For Race Use Only; 100% Clamp Load Tested And Dynamically Computer Balanced For Smooth High Rpm Reliability
• Weight: 14.8 lbs.
• Torque Capacity: 625 ft.-lbs.
• Torque Capacity Over OE: 156%
• Pilot Bushing: Yes
• Pressure Plate Type: MaXX
• Release Bearing: Yes
• Clutch Disc Diameter: 9.4 in.
• Clutch Disc Diameter: 240 mm
• Disc Material: Ceramic
• Input Spline Quantity: 23
• Input Shaft Diameter: 1 in.
• Alignment Tool Included: Yes