ACT NS1-HDR6 HD/Race Rigid 6-Pad Clutch Kit

NS1-HDR6 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 6-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 6-pad rigid race disc, engagement is harsher, but shifting is faster. The 6-pad rigid race disc is recommended for larger clutch sizes to absorb more heat. HD/Race Rigid 6 Pad Light to moderate pedal effort, aggressive engagement, 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

• "Excellence in Performance", backed by the best one-year warranty in the industry!

The ACT NS1-HDR6 HD/Race Rigid 6-Pad Clutch Kit is engineered for race applications that demand high heat tolerance, fast shifting, and dependable high-RPM performance. This automotive clutch kit combines ACT’s Heavy Duty pressure plate with a rigid 6-pad ceramic race disc for increased clamp load, reduced deflection, and consistent engagement under demanding conditions.

ACT Heavy Duty pressure plates use an exclusive diaphragm design and precision cover stampings to improve rigidity and consistency while maximizing clutch service life. Each diaphragm undergoes a four-stage heat-treating process, and every pressure plate is 100% clamp-load tested and dynamically computer balanced. The result is smooth, reliable operation at high engine speeds with light to moderate pedal effort.

The rigid 6-pad race disc uses select ceramic friction materials and a heat-treated chrome-moly hub for strength and durability. Its lightweight, rigid construction supports quicker shifts and increased heat capacity, particularly with larger clutch applications. Engagement is intentionally more aggressive than a full-face street disc and may increase gear rattle or spline wear, making this ACT kit best suited for race use rather than daily street driving. The kit is backed by ACT’s one-year industry warranty.

Product Specifications & Technical Data

• Brand: ACT
• Part Number: NS1-HDR6
• Product Type: Automotive clutch kit
• Clutch Design: HD/Race rigid 6-pad
• Disc Friction Material: Ceramic
• Hub Construction: Heat-treated chrome-moly
• Performance Use: Race applications only
• Balance and Testing: 100% clamp-load tested and dynamically computer balanced

What’s Included

• ACT Heavy Duty pressure plate
• ACT rigid 6-pad ceramic race disc
• Clutch kit components supplied by the manufacturer

Fitment data should be verified against the vehicle’s year, make, model, engine, transmission, clutch diameter, and application requirements before ordering. Professional installation is recommended.

Features:

• Heavy Duty Pressure Plate: ACT’s exclusive diaphragm design increases clamp load, reduces deflection, and helps maximize clutch life.
• Rigid 6-Pad Race Disc: Ceramic friction material delivers aggressive engagement, quick shifting, and high heat tolerance.
• Heat-Treated Chrome-Moly Hub: Provides enhanced strength and durability for demanding race environments.
• Precision Tested Performance: The assembly is clamp-load tested and dynamically computer balanced for reliable high-RPM operation.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1