ACT NS3-HDR4 Heavy Duty/Race Rigid 4 Pad Kit

The ACT NS3-HDR4 kit is engineered for those who demand reliability and performance from their clutch system. This kit features ACT's renowned Heavy Duty pressure plate, designed with an exclusive diaphragm that enhances clamp load while minimizing deflection, resulting in superior clutch longevity. Each diaphragm undergoes a rigorous four-stage heat-treating process to ensure optimal performance under stress.

Pressure Plate Features

• Precision cover stampings ensure rigidity and consistent performance.
• Light to moderate pedal effort with aggressive engagement, ideal for high-performance applications.
• Moderate friction life, extended through ACT's unique diaphragm design, though it may increase spline wear over time.
• 100% clamp load tested and dynamically balanced for reliable high RPM operation.

Disc Specifications

The 4-pad rigid race discs are constructed from high-quality ceramic friction materials, featuring a chrome-moly hub that is heat-treated for added strength and durability. This lightweight and rigid design allows for quicker shifts and smooth operation. Note that the engagement is more aggressive, which translates to faster shifting capabilities, making it a suitable choice for smaller engines that utilize smaller disc sizes.

Installation Notes

• For detailed installation instructions, CLICK HERE.

Specifications

• Clutch Disc Diameter: 9.4 in (240 mm)
• Disc Material: Ceramic
• Input Spline Quantity: 24
• Input Shaft Diameter: 1 in
• Product Weight: 16.5 lbs
• Torque Capacity: 525 ft/lbs
• Torque Capacity Over OE: 0.86
• Alignment Tool Included: Yes
• Grease Included: Yes

The ACT NS3-HDR4 is a dedicated racing component, recommended for track use only, ensuring that you have the performance edge you need when it matters most.