SPEC Stage 3 Clutch Kit – Nissan SR20DET Rear-Wheel Drive | Performance Street & Track

The SPEC Stage 3 Clutch Kit for the Nissan SR20DET rear-wheel drive is a performance clutch system engineered for SR20DET-powered builds that have outgrown the factory clutch's torque capacity — delivering the increased clamp load, improved friction material, and higher torque rating that modified SR20DET engines demand, in a complete kit that includes everything needed for a full clutch replacement. The Stage 3 is SPEC's mid-tier performance clutch — positioned above the Stage 1 (OE-spec replacement) and Stage 2 (mild performance upgrade) for builds running meaningful power above stock, and below the Stage 4 and Stage 5 competition-grade systems for builds targeting extreme power levels. For SR20DET owners running a boosted, built, or otherwise modified engine where the factory clutch is slipping or no longer adequate, the SPEC Stage 3 is the correct performance clutch upgrade.

Key Features:

• Stage 3 performance rating — SPEC's mid-tier performance clutch — engineered for SR20DET builds running meaningful power above stock where the factory clutch and Stage 1/2 alternatives are no longer adequate
• High-clamp pressure plate — increased clamp load over the factory pressure plate for improved clutch engagement force and higher torque capacity — resisting clutch slip at elevated power levels
• Performance friction disc — Stage 3 friction material for improved torque capacity and heat resistance compared to OE-spec friction materials — suitable for performance street and track use
• RWD-specific — engineered for rear-wheel drive SR20DET applications — Nissan 180SX, 200SX S13/S14, Silvia S13/S14/S15, and related RWD SR20DET platforms
• Complete kit — includes pressure plate, friction disc, and release bearing for a complete clutch replacement in a single purchase
• SPEC engineering quality — manufactured by SPEC Clutch, a respected US performance clutch brand with a strong following in the Nissan, Mitsubishi, and Subaru performance community

Performance Benefits:

• Increased Torque Capacity: The Stage 3's higher clamp load and performance friction material deliver a significantly higher torque capacity than the factory SR20DET clutch — allowing the clutch to handle the elevated torque output of modified SR20DET engines without slipping. For SR20DET builds running increased boost, upgraded turbochargers, or other power-adding modifications, the Stage 3's increased torque capacity is the primary reason to upgrade from the factory clutch or a Stage 1/2 alternative
• Improved Heat Resistance: The Stage 3's performance friction material provides improved heat resistance compared to OE-spec friction materials — maintaining clutch engagement consistency during the repeated high-load clutch engagements that performance street driving and track use demand. Factory clutch friction materials can overheat and glaze during aggressive use, leading to clutch slip and premature wear — the Stage 3's friction material is engineered to resist this degradation
• Firm Pedal Feel: The Stage 3's higher clamp load results in a noticeably firmer clutch pedal feel compared to the factory clutch — providing more positive clutch engagement feedback and a more direct, more mechanical driving character. The pedal effort increase is meaningful but manageable for daily driving — the Stage 3 is not a competition-only clutch
• Engagement Characteristics: The Stage 3's performance friction disc provides a more progressive, more controlled engagement character than competition-grade Stage 4/5 clutches — making it suitable for performance street use where smooth, controllable clutch engagement is important alongside the increased torque capacity

SPEC Stage System — Choosing the Right Stage for Your SR20DET Build:

• Stage 1 — OE-spec replacement — correct for stock or mildly modified SR20DET builds at near-stock power levels
• Stage 2 — mild performance upgrade — suitable for lightly modified SR20DET builds with modest power increases above stock
• Stage 3 (this product) — mid-tier performance clutch — correct for SR20DET builds running meaningful power above stock where Stage 1/2 alternatives are no longer adequate. Suitable for performance street and track use.
• Stage 4 — high-performance clutch — for high-power SR20DET builds where Stage 3 torque capacity is insufficient. Increased pedal effort and more aggressive engagement characteristics.
• Stage 5 — competition-grade clutch — for maximum-power SR20DET builds and competition use. Not recommended for street driving.

Specifications:

• Brand: SPEC Clutch
• Part Number: SPECSN333
• Stage: 3
• Drivetrain: Rear-wheel drive (RWD)
• Application: Nissan SR20DET — RWD platforms
• Kit Contents: Pressure plate, friction disc, release bearing

Fitment Information:

• Nissan 180SX — SR20DET RWD
• Nissan 200SX / Silvia S13 — SR20DET RWD
• Nissan 200SX / Silvia S14 — SR20DET RWD
• Nissan Silvia S15 — SR20DET RWD
• Note: RWD SR20DET applications only — this kit is not compatible with FWD SR20DE or SR20DET applications (Nissan Primera, Pulsar, etc.). Verify your specific SR20DET platform and transmission before ordering. Professional installation by an experienced SR20DET / Nissan drivetrain specialist strongly recommended.

What's Included:

• SPEC Stage 3 pressure plate
• SPEC Stage 3 friction disc
• Release bearing

Installation Notes:

• Professional installation by an experienced SR20DET / Nissan drivetrain specialist strongly recommended — clutch replacement requires correct torque specifications, correct flywheel surface preparation, and correct release bearing installation
• Inspect and resurface or replace the flywheel before installing a new clutch — a worn or heat-damaged flywheel surface will accelerate clutch disc wear and reduce the new clutch's service life
• Clean the flywheel and pressure plate mating surfaces thoroughly before installation — any oil contamination will cause clutch slip and premature failure
• Use a clutch alignment tool to correctly centre the friction disc before torquing the pressure plate — incorrect disc alignment will prevent correct gearbox installation
• Bed in the new clutch correctly after installation — avoid aggressive clutch engagement for the first 500–1,000 km to allow the friction material to seat correctly against the flywheel and pressure plate surfaces
• Inspect the clutch fork, pivot ball, and hydraulic clutch system (master cylinder, slave cylinder, lines) before installation — replace worn components to ensure correct clutch release and engagement

Why SPEC Clutch?

SPEC Clutch is a US performance clutch brand with a strong following in the Nissan, Mitsubishi, Subaru, and domestic performance community — known for their tiered stage system that allows builders to select the correct clutch for their specific power level and use case, from OE-spec Stage 1 replacements to competition-grade Stage 5 systems. SPEC's engineering philosophy emphasizes correct friction material selection, correct clamp load specification, and platform-specific fitment — producing clutch systems that deliver the correct torque capacity and engagement characteristics for each stage's intended application. For SR20DET builders who want a quality performance clutch from a brand that understands the platform, SPEC is a well-regarded choice.

Perfect For:

• SR20DET RWD builds (180SX, S13, S14, S15) running meaningful power above stock where the factory clutch or Stage 1/2 alternatives are slipping or no longer adequate
• Boosted SR20DET builds with upgraded turbochargers, increased boost, or other power-adding modifications that have exceeded the factory clutch's torque capacity
• Performance street and track builds where a balance of increased torque capacity and manageable daily-driving clutch feel is the priority
• Builders who want a complete SPEC clutch kit — pressure plate, disc, and release bearing — in a single purchase for a full clutch replacement

Note: RWD SR20DET applications only — not compatible with FWD SR20 applications. Professional installation and flywheel inspection/resurfacing required. Bed in the clutch correctly after installation. Verify your specific SR20DET platform and transmission before ordering.