Advanced Clutch Set Diaphragm Rigid 4 Paddle - HC4-XTR4

Clutch Set; Race; 8.3 Inch Clutch Diameter; 7/8 Inch x 20 Spline Input Shaft; Diaphragm; Steel Pressure Plate; Single Disc/ Ceramic Friction Material; 4 Paddle Design/ Rigid Hub; With Advanced Clutch Technology Part Number 4212004 Clutch Disc/ RB427 Clutch Throwout Bearing/ PB1002 Clutch Pilot Bearing/ H023X Clutch Pressure Plate/ AT20 Clutch Alignment Tool; Requires Clutch Flywheel Part Number ACT600120 Depending On Application Only If Listed

MPN: HC4-XTR4

The Xtreme pressure plate allows for a 50 to 120 Percent increase in clamp load over the stock unit. ACT pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure an exclusive four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency, and some are reinforced to reduce flex and improve efficiency and the feel of the pressure plate. ACT pressure plates are manufactured from new units not rebuilt from worn out parts and are 100 Percent tested and computer balanced for smooth operation at high RPM. ACT’s Xtreme pressure plates have a moderate to stiff pedal feel. Xtreme pressure plates are recommended for use with a street or race disc. Xtreme pressure plates meet SFI Specification 1.1 and are legal in all racing organizations that require SFI certification. ACT’s 4-pad rigid race discs are made with high quality, ceramic friction materials and all friction pads are measured, sorted and matched before assembly to ensure each disc is uniform in thickness. The chrome-moly hub is heat-treated for strength and durability, and 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. This disc is not recommended for street use. All ACT race discs are certified as meeting SFI Specification 1.1 and are legal in all racing organizations that require SFI certification. The kit is completed with a quality, stock replacement release bearing, pilot bearing and alignment tool.

Features

• Lightweight Rigid Design For Quicker Shifts And Smooth, Trouble Free Service
• Spring Center Construction Properly Dampens Torsional Vibrations For Quieter Operation
• Center Section Resists Failure Even Under Harsh Conditions
• Chrome Moly Hub Is Heat Treated For Strength And Durability
• Clamp Load Increase Of 50 To 120 Percent Over Stock With A Moderate To Stiff Pedal Feel
• Premium Ceramic Friction Materials Provide High Heat Tolerance, High Coefficient Of Friction, Low Wear Rates And Will Hold Approximately 28 Percent More Torque Than Standard Organic Materials
• Most ACT Pressure Plates Are Certified As Meeting SFI Specification 1.1 And Are Legal For Competition In All Racing Organizations Where SFI Certification Is Required
• Limited 1 Year Warranty