About this product
ACT Clutch Kits & Flywheels Advanced Clutch HD/Race Rigid 4 Pad Kit | (NS4-HDR4)
ACT Clutch Kits & Flywheels part number NS4-HDR4 is a performance clutch or flywheel part. The manufacturer lists it for off-road or competition use only.
Specifications
Brand ACT Clutch Kits & Flywheels Manufacturer part number NS4-HDR4 Category Clutch Kits, Flywheels & Accessories Type Performance upgrade Shipping weight 17.0 lbBefore you buy: clutch or flywheel part tips
- Lightweight flywheels let the engine rev faster but can make launches and low-speed driving less smooth.
- Resurface or replace the flywheel when installing a new clutch.
Frequently asked questions
Will this ACT Clutch Kits & Flywheels clutch or flywheel part fit my vehicle?
Check the sizes and application details in the specifications and manufacturer description below. Contact mobileiGo with your year, make, model and engine if you are unsure.
What is the part number?
The manufacturer part number is NS4-HDR4.
Is it street legal?
The manufacturer lists it for off-road or competition use only. It is not intended for use on pollution-controlled vehicles on public roads.
What torque is this clutch rated for?
The torque rating is listed in the specifications or manufacturer description when the maker publishes it. Choose a rating above your engine's output.
Is this part new?
Yes. It is a new part sourced from an authorized distributor.
Manufacturer description
Advanced Clutch HD/Race Rigid 4 Pad Kit NS4-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 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.
Features:
- 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
Specifications:
- Clutch Master Cylinder Included: No
- Grease Included: Yes
- Grade Type: Performance
- Pilot Bushing Included: Yes
- Pressure Plate Type: Heavy Duty
- Release Bearing Included: Yes
- Clutch Disc Diameter: 8.8 in
- Clutch Disc Diameter: 224 mm
- Disc Material: Ceramic
- Input Spline Quantity: 24
- Input Shaft Diameter: 1 in
- Alignment Tool Included: Yes
- Disc Type Sprung Solid: Solid
- Pressure Plate Bolts Included: No
- Clutch Slave Cylinder Included: No
- Flywheel Bolts Included: No
- Product Weight (lbs.): 13.5
- Torque Capacity (ft/lbs.): 390
- Torque Capacity Over OE: 0.74
References
- Installation Instructions
Description supplied by mobileiGo.com through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.
