Vehicle Fitment

• 1991–1998 Nissan Silvia K [JDM] — 2.0L Turbo I4 (SR20DET) — Manual
• 1990–1998 Nissan Bluebird SSS Attessa LTD [JDM, AWD] — 2.0L Turbo I4 (SR20DET) — Manual

Fitment Notes

• JDM applications only — not for US-market Nissan 240SX (KA24DE / KA24E)
• Kit includes pressure plate, disc, release bearing, pilot bushing, and alignment tool — flywheel not included
• Expect a 15–40% increase in pedal effort with the Heavy Duty pressure plate (varies by application)
• Break in for 300–500 miles with mild engagement before racing or spirited driving
• Manual transmission only; professional installation recommended

Features

• ACT Heavy Duty pressure plate (N015) with exclusive four-stage heat-treated diaphragm for increased clamp load and reduced deflection
• Precision cover stampings provide rigidity and consistency
• 240mm Performance Street sprung disc (3000405) with premium high-copper organic friction material for better heat transfer and reduced fade
• Steel-backed lining for greater burst strength; reduced marcel for faster shift action
• 370 ft-lb torque capacity — 49% over OE
• 100% clamp load tested and dynamically computer balanced for smooth high-RPM reliability
• Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle

Specifications

• Part Number: NS1-HDSS
• Brand: ACT (Advanced Clutch Technology)
• Product Type: Clutch Kit
• Kit Type: Heavy Duty / Performance Street Sprung
• Pressure Plate Type: Heavy Duty
• Disc Material: Organic
• Clutch Disc Diameter: 240 mm (9.4 in)
• Input Shaft Diameter: 1 in
• Torque Capacity: 370 ft-lb (measured at the crank)
• Torque Capacity Over OE: 49%
• Kit Weight: 16.5 lb
• Warranty: 12 Months
• UPC: 837055009845

Included Components

• 1x ACT N015 Heavy Duty Pressure Plate
• 1x ACT 3000405 Performance Street Sprung Clutch Disc
• 1x ACT RB810 Release Bearing
• 1x ACT PB1012 Pilot Bushing
• 1x ACT AT01 Clutch Alignment Tool

Product Description

The ACT NS1-HDSS is a Heavy Duty Performance Street Sprung clutch kit for the JDM 1991–1998 Nissan Silvia K and 1990–1998 Nissan Bluebird SSS Attessa LTD with the 2.0L turbocharged SR20DET. Rated at 370 ft-lb (49% over OE), it pairs ACT's N015 Heavy Duty pressure plate with a 240mm Performance Street sprung organic disc, release bearing, pilot bushing, and alignment tool.

It delivers smooth, daily-drivable engagement with more clamp load than stock for tuned street SR20DET builds. Every assembly is clamp-load tested and computer balanced for smooth high-RPM reliability. Recommended for street and race use. Backed by a 12-month warranty.