ACT HD Performance Street Sprung Clutch Kit Nissan 240SX Silvia S13 S14 1989-1998 SR20DET

ACT Heavy Duty / Performance Street Sprung Clutch Kit — Nissan SR20DET (NS1-HDSS)

One of the most common clutch upgrades on an SR20DET swap, and for good reason — it pairs ACT's most popular Heavy Duty pressure plate with their most popular street disc.

Heavy Duty pressure plates use an exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life, with every diaphragm going through a four-stage heat-treating process. Precision cover stampings give the assembly rigidity and consistency. Clamp load comes in 20 to 50 percent over OEM.

The Performance Street disc is premium organic with high copper content for better heat transfer and steel-backed lining for greater burst strength. Reduced marcel gives faster shift action.

Rated to 372 lb-ft — the right capacity for a daily driven SR20 on the street. Past roughly 400 whp you want a puck disc instead. 9.4" disc, 24-spline on a 1.000" input shaft.

Every assembly is 100 percent clamp load tested and computer spin balanced to within .25 oz-in, versus roughly .50 for a stock production clutch.

Fitment: 1989-1998 Nissan 240SX, 180SX, and 200SX with SR20DET. S13, S14, S15.

Pedal effort increases 15 to 40 percent over stock. ACT is direct about that trade: clutches developed with less pedal effort tend to give up longevity, torque capacity, or engagement quality.

Break-in: 300-500 miles of mild stop-and-go before spirited driving. Overheating an organic disc during break-in glazes the facings or fuses the friction surfaces.

Kit includes heavy duty pressure plate, Performance Street disc, release bearing, pilot bearing, and alignment tool. Flywheel not included. One-year warranty.