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SPEC RB25/20 Stage 1 Clutch Kit (RB20DET Only) is a vehicle-specific clutch kits engineered for performance manual-transmission applications. It is selected by the complete vehicle, transmission, clutch, flywheel, and release-system configuration, not by engine family or chassis code alone.
Key Features
- Exact SPEC manufacturer part number SN231
- Exact part number and applications verified on the current SPEC manufacturer site
- Molded high-performance organic lining balances smooth engagement, service life, and increased holding capacity
- Manufacturer-published torque capacity: 385 lb-ft
- Manufacturer-published product weight: 19 lbs
- Flywheel and pressure-plate configuration must match the specific manufacturer application note
Fitment
| Years | Make | Model | Submodel |
|---|---|---|---|
| 1986-1994 | Nissan | 200SX | |
| 1989-1998 | Nissan | 240SX | |
| 1974-1978 | Nissan | 280Z | |
| 1974-1978 | Nissan | 280ZX | |
| 1981-1983 | Nissan | 280ZX | |
| 1983-1996 | Nissan | 300ZX | |
| 1998-2004 | Nissan | Frontier | |
| 1986-1993 | Nissan | Pathfinder | |
| 1982-1997 | Nissan | Pick-up | |
| 1994-2002 | Nissan | Silvia | |
| 1985-1998 | Nissan | Skyline | |
| 1999-2004 | Nissan | Xterra |
Specifications
| Brand | SPEC |
|---|---|
| Manufacturer Part Number | SN231 |
| Product Type | Clutch Kits |
| Fitment Type | Vehicle specific |
| Condition | New |
| Pricing Policy | Market audited, not MAP protected |
| Manufacturer Series | Stage 1 |
| Torque Capacity | 385 lb-ft |
| Product Weight | 19 lbs |
What's Included
One new SPEC clutch kits package identified by manufacturer part number SN231. Bearings, flywheels, hydraulic parts, fasteners, and installation tools are included only when the exact manufacturer package states they are included.
About SPEC
SPEC Clutch designs and manufactures performance clutch kits, multidisc assemblies, and billet flywheels in the United States for street, track, and competition applications.
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Frequently Asked Questions
How do I confirm SPEC SN231 fits my vehicle?
Match the complete year, make, model, engine, transmission, clutch type, flywheel type, and every SPEC application note. The manufacturer part number must match exactly.
Does this require a specific flywheel or pressure plate?
Yes. This part has application-specific flywheel or pressure-plate requirements. Confirm the exact SPEC application note and required companion part before ordering.
What installation checks are required?
Inspect the flywheel surface, pilot and release bearings, hydraulic or cable release system, fasteners, bellhousing alignment, and rear main seal. Follow current SPEC torque and break-in instructions.
Installation
Follow the current SPEC instructions for part number SN231. Confirm the flywheel surface, crank and clutch patterns, disc orientation, spline engagement, pilot support, release travel, bellhousing alignment, and fastener torque before operation. Complete the manufacturer-required break-in procedure before full-load use.
SPEC
Shop SPEC performance clutch kits, multidisc assemblies, flywheels, clutch discs, and release components by exact manufacturer part number and verified application.Choosing the Correct SPEC Part Match the complete SPEC manufacturer part number Confirm the full year, make, model, engine, and manual transmission Verify clutch diameter, spline, crank pattern, flywheel pattern, and release system Follow every manufacturer note about required SPEC or original-equipment flywheels Vehicle FitmentVehicle-specific products use canonical year, make, model, and only legitimate required submodel records for Convermax filtering. Engine families, transmission codes, and chassis codes remain application notes rather than make or model values.Related SPEC Products All SPEC products SPEC BMW Stage 3 Plus clutch kit SPEC BMW steel flywheel SPEC Mustang Shelby GT350 twin-disc clutch kit Frequently Asked QuestionsHow do I verify SPEC clutch fitment?Match the exact part number, year, make, model, engine...
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