{"product_id":"act-nx1-hdss-heavy-duty-performance-street-sprung-clutch-kit","title":"ACT NX1-HDSS Heavy Duty Performance Street Sprung Clutch Kit","description":"NX1-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. 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 Performance Street discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, with increased strength and reliability.\nHD\/Perf Street Sprung\nLight to moderate pedal effort, smooth positive engagement, OE to mild gear rattle; Longer friction life, extended by ACT's exclusive diaphragm design; Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade; Recommended for street and race use; 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability\n\u003cul\u003e\n  \u003cli\u003e\"Excellence in Performance\", backed by the best one-year warranty in the industry!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe ACT NX1-HDSS Heavy Duty Performance Street Sprung Clutch Kit combines ACT's proven Heavy Duty pressure plate with a Performance Street sprung disc for dependable street performance and select racing applications. Designed for drivers seeking stronger clutch engagement without an excessively demanding pedal, this kit delivers light to moderate pedal effort, smooth positive engagement, and reliable power transfer for OE to mildly modified drivetrains.\u003c\/p\u003e\u003cp\u003eThe Heavy Duty pressure plate uses ACT's exclusive diaphragm design to increase clamp load, reduce deflection, and help extend clutch life. Each diaphragm undergoes a four-stage heat-treating process for consistent performance, while precision cover stampings provide added rigidity and uniform operation. The included Performance Street disc uses premium organic friction material with high copper content to improve heat transfer and help resist fade. Steel-backed lining enhances burst strength and durability, while reduced marcel supports quicker shift action.\u003c\/p\u003e\u003cp\u003eEvery ACT NX1-HDSS assembly is carefully engineered, precisely assembled, accurately balanced, 100% clamp-load tested, and dynamically computer balanced for smooth, reliable operation at high RPM. It is recommended for street and race use where longer friction life, improved heat tolerance, and dependable engagement are important. The kit is designed for select Nissan applications, including the 1984–1986 Nissan 720 and 1995–1997 Nissan 240SX; verify transmission, engine, and application details before ordering. ACT backs this clutch kit with its industry-leading one-year warranty.\u003c\/p\u003e\u003ch3\u003eProduct Specifications \u0026amp; Technical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: ACT\u003c\/li\u003e\n\u003cli\u003ePart Number: NX1-HDSS\u003c\/li\u003e\n\u003cli\u003eClutch Type: Heavy Duty pressure plate with Performance Street sprung disc\u003c\/li\u003e\n\u003cli\u003eDisc Material: Premium organic friction material with high copper content\u003c\/li\u003e\n\u003cli\u003eEngagement: Smooth, positive engagement with reduced marcel\u003c\/li\u003e\n\u003cli\u003ePedal Effort: Light to moderate\u003c\/li\u003e\n\u003cli\u003eRecommended Use: Street and race applications\u003c\/li\u003e\n\u003cli\u003eQuality Testing: 100% clamp-load tested and dynamically computer balanced\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eACT Heavy Duty pressure plate\u003c\/li\u003e\n\u003cli\u003eACT Performance Street sprung clutch disc\u003c\/li\u003e\n\u003cli\u003eClutch kit components required for the specified application\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeavy Duty Pressure Plate: ACT's exclusive diaphragm design increases clamp load, reduces deflection, and helps maximize clutch life.\u003c\/li\u003e\n\u003cli\u003ePerformance Street Sprung Disc: Premium organic friction material with high copper content improves heat transfer, heat tolerance, and fade resistance.\u003c\/li\u003e\n\u003cli\u003eSmooth Street Engagement: Reduced marcel and carefully matched components provide faster shift action with light to moderate pedal effort.\u003c\/li\u003e\n\u003cli\u003eBalanced High-RPM Reliability: Precision assembly, 100% clamp-load testing, and dynamic computer balancing support consistent operation for street and race use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n1975 Nissan 280Z Base\u003cbr\u003e\n1975 Nissan 620 Base\u003cbr\u003e\n1976 Nissan 280Z Base\u003cbr\u003e\n1976 Nissan 620 Base\u003cbr\u003e\n1977 Nissan 280Z Base\u003cbr\u003e\n1977 Nissan 620 Base\u003cbr\u003e\n1978 Nissan 280Z Base\u003cbr\u003e\n1978 Nissan 620 Base\u003cbr\u003e\n1979 Nissan 280ZX Base\u003cbr\u003e\n1979 Nissan 620 Base\u003cbr\u003e\n1980 Nissan 280ZX Base\u003cbr\u003e\n1980 Nissan 280ZX GL\u003cbr\u003e\n1980 Nissan 720 Base\u003cbr\u003e\n1980 Nissan 720 Deluxe\u003cbr\u003e\n1981 Nissan 280ZX Base\u003cbr\u003e\n1981 Nissan 280ZX GL\u003cbr\u003e\n1981 Nissan 720 Base\u003cbr\u003e\n1981 Nissan 720 Deluxe\u003cbr\u003e\n1982 Nissan 280ZX Base\u003cbr\u003e\n1982 Nissan 720 Base\u003cbr\u003e\n1982 Nissan 720 Deluxe\u003cbr\u003e\n1982 Nissan Maxima GL\u003cbr\u003e\n1983 Nissan 280ZX Base\u003cbr\u003e\n1983 Nissan 720 Base\u003cbr\u003e\n1983 Nissan 720 Deluxe\u003cbr\u003e\n1983 Nissan Maxima GL\u003cbr\u003e\n1984 Nissan 720 Deluxe\u003cbr\u003e\n1984 Nissan Maxima GL\u003cbr\u003e\n1985 Nissan 720 Deluxe\u003cbr\u003e\n1986 Nissan 720 Deluxe\u003cbr\u003e\n1989 Nissan 240SX SE\u003cbr\u003e\n1989 Nissan 240SX XE\u003cbr\u003e\n1990 Nissan 240SX SE\u003cbr\u003e\n1990 Nissan 240SX XE\u003cbr\u003e\n1990 Nissan Axxess SE\u003cbr\u003e\n1990 Nissan Axxess XE\u003cbr\u003e\n1995 Nissan 240SX Base\u003cbr\u003e\n1995 Nissan 240SX SE\u003cbr\u003e\n1996 Nissan 240SX Base\u003cbr\u003e\n1996 Nissan 240SX SE\u003cbr\u003e\n1997 Nissan 240SX Base\u003cbr\u003e\n1997 Nissan 240SX LE\u003cbr\u003e\n1997 Nissan 240SX SE\u003cbr\u003e\n1998 Nissan 240SX Base\u003cbr\u003e\n1998 Nissan 240SX LE\u003cbr\u003e\n1998 Nissan 240SX SE\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; 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