SPEC SN231 Stage 1 Clutch Kit Push Type for Nissan Skyline R32 R33 RB20 RB25

Vehicle Fitment

• Nissan Skyline R31 - 2.0L RB20E/RB20DE, Manual Transmission, Push Type
• Nissan Skyline R32 GTS-T - 2.0L RB20DET, Manual Transmission, Push Type
• Nissan Skyline R32 GTS-25 - 2.5L RB25DE, Manual Transmission, Push Type
• Nissan Skyline R32 GT-R - 2.6L RB26DETT, Manual Transmission, Push Type
• Nissan Skyline R33 GTS - 2.0L RB20E, Manual Transmission, Push Type
• Nissan Skyline R33 GTS-25 / GTS-25T - 2.5L RB25DE/RB25DET, Manual Transmission, Push Type

Fitment Notes

• Push Type clutch actuation system only. Some Nissan Skyline variants use a pull-type system - verify your vehicle's clutch actuation type before ordering. This kit will NOT function correctly on pull-type systems.
• Covers multiple RB-series engine variants across R31, R32, and R33 Skyline platforms. Verify the specific engine code (RB20DET, RB25DE, RB25DET, RB26DETT) and clutch type for your exact vehicle before ordering.
• Compatible with the OE flywheel (resurfaced) or a replacement flywheel. Flywheel is NOT included - existing flywheel surface must be resurfaced prior to installation unless a new flywheel is being used.
• A minimum 450-mile break-in period is required - primarily city/stop-and-go driving - before full-throttle engagement, drag launches, or speed shifting. Failure to break in the clutch will void the warranty.
• Note regarding the pilot bushing supplied: use the SPEC-supplied pilot bushing unless your specific application has known compatibility concerns - consult SPEC directly if unsure.

Features

• SPEC Stage 1 clutch kit for Nissan Skyline R31, R32, and R33 with push-type clutch actuation across RB20, RB25, and RB26 engine applications - rated at 350 lb-ft of torque capacity for street, drag, drift, road race, and rallye use
• Carbon Kevlar-based high-performance organic friction lining with integrally bonded steel backing - smooth, near-stock engagement with improved torque capacity and wear life for mildly modified and bolt-on forced induction RB engines
• Multi-compound woven organic material on a double-sprung hub - stock-like daily drivability and smooth engagement suitable for street driving, drift, and track use
• High-clamp pressure plate provides greater holding power than the OE unit while maintaining a friendly pedal feel
• Suitable for street, drag, drift, road race, rallye, pulling, and autocross applications
• SFI approved - designed, hand-built, and tested in the USA by SPEC Clutch

Specifications

• Part Number: SN231
• Brand: SPEC Clutch
• Stage: 1
• Clutch Actuation: Push Type only
• Disc Material: Carbon Kevlar-based organic lining, multi-compound woven, integrally bonded steel backing
• Hub: Double-sprung (sprung hub), heat-treated
• Torque Capacity: Up to 350 lb-ft
• Certification: SFI approved
• Recommended Use: Street, drag, drift, road race, rallye, pulling, autocross
• Flywheel: Not included - OE flywheel may be reused (resurfaced), or use a replacement flywheel
• Warranty: 120-day limited (from retail purchase date)

Included Components

• 1x High-clamp pressure plate
• 1x Carbon Kevlar organic disc assembly (double-sprung hub)
• 1x Throwout (release) bearing
• 1x Pilot bushing
• 1x Clutch alignment tool
• Flywheel NOT included

Product Description

The SPEC SN231 is a Stage 1 clutch kit engineered for the Nissan Skyline R31, R32, and R33 with a push-type clutch actuating system, covering RB20, RB25, and RB26 engine variants including the RB20DET (R32 GTS-T), RB25DE/RB25DET (R32/R33 GTS-25 variants), and RB26DETT (R32 GT-R). Rated at 350 lb-ft of torque capacity, it is SPEC's entry-level performance upgrade for the RB-powered Skyline platform - ideal for street, drift, and mildly boosted builds that need a reliable step up from the OE clutch without sacrificing daily drivability. The carbon Kevlar-based organic disc with multi-compound woven material and steel backing delivers smooth, near-stock engagement feel with improved torque capacity and wear life.

The complete kit includes the throwout bearing, pilot bushing, alignment tool, clutch disc, and pressure plate - everything required for a full clutch replacement. The OE flywheel may be reused if properly resurfaced; flywheel is not included. Verify push-type clutch actuation before ordering - this kit is not compatible with pull-type systems used on some Skyline variants. A mandatory 450-mile break-in period of city and stop-and-go driving is required before full-throttle or aggressive operation, and failure to complete break-in will void the warranty. All SPEC clutch kits are SFI approved and hand-built in the USA.