{"product_id":"advanced-clutch-hd-race-sprung-4-pad-ns1-hdg4","title":"Advanced Clutch HD\/Race Sprung 4 Pad | (NS1-HDG4)","description":"\u003cp\u003eAdvanced Clutch HD\/Race Sprung 4 Pad NS1-HDG4 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 spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eLight to moderate pedal effort, aggressive engagement, OE to mild gear rattle\u003c\/li\u003e\n\u003cli\u003eModerate friction life, extended by ACT's exclusive diaphragm design\u003c\/li\u003e\n\u003cli\u003eCarefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance\u003c\/li\u003e\n\u003cli\u003eRecommended for high horsepower street or race use\u003c\/li\u003e\n\u003cli\u003e100% clamp load tested and dynamically computer balanced for smooth high RPM reliability\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eClutch Master Cylinder Included: No \u003c\/li\u003e\n\u003cli\u003eGrease Included: Yes \u003c\/li\u003e\n\u003cli\u003eGrade Type: Performance \u003c\/li\u003e\n\u003cli\u003ePilot Bushing Included: Yes \u003c\/li\u003e\n\u003cli\u003ePressure Plate Type: Heavy Duty \u003c\/li\u003e\n\u003cli\u003eRelease Bearing Included: Yes \u003c\/li\u003e\n\u003cli\u003eClutch Disc Diameter: 9.4 in\u003c\/li\u003e\n\u003cli\u003eClutch Disc Diameter: 240 mm\u003c\/li\u003e\n\u003cli\u003eDisc Material: Ceramic \u003c\/li\u003e\n\u003cli\u003eInput Spline Quantity: 24 \u003c\/li\u003e\n\u003cli\u003eInput Shaft Diameter: 1 in\u003c\/li\u003e\n\u003cli\u003eAlignment Tool Included: Yes \u003c\/li\u003e\n\u003cli\u003eDisc Type Sprung Solid: Sprung \u003c\/li\u003e\n\u003cli\u003ePressure Plate Bolts Included: No \u003c\/li\u003e\n\u003cli\u003eClutch Slave Cylinder Included: No \u003c\/li\u003e\n\u003cli\u003eFlywheel Bolts Included: No \u003c\/li\u003e\n\u003cli\u003eProduct Weight (lbs.): 15.5 \u003c\/li\u003e\n\u003cli\u003eTorque Capacity (ft\/lbs.): 475 \u003c\/li\u003e\n\u003cli\u003eTorque Capacity Over OE: 0.9 \u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReferences\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.vividracing.com\/file\/vr\/148\/2025\/ACT_General_Installation_Instructions.pdf\" target=\"_blank\"\u003eInstallation Instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"C-Dub Tech","offers":[{"title":"Default Title","offer_id":46064757899417,"sku":"ACT NS1-HDG4","price":554.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0062\/2306\/9284\/files\/NS1-HDG4.webp?v=1767599535","url":"https:\/\/cdubtech.com\/products\/advanced-clutch-hd-race-sprung-4-pad-ns1-hdg4","provider":"C-Dub Tech","version":"1.0","type":"link"}