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SPEC Spec RB25/20 Stage 2+ Clutch Kit
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Spec RB25/20 Stage 2+ Clutch Kit

SPEC
SPECSN233H
Clutch Kits - Single
2 Units In Stock - Ships Next Business Day
$ 519.00 $ 467.10
$ 467.10

SKU: CSN233H

Spec RB25/20 Stage 2+ Clutch Kit 1989-1999 Nissan 240SX S13/S14 Silvia S13/S14 180SX

This SPEC Stage 2+ clutch kit handles reliable power for RB20DET and RB25DET engine swaps in 1989-1999 Nissan 240SX S13/S14 Silvia S13/S14 and 180SX models. It supports up to 515 ft/lbs torque for track and spirited driving with smooth engagement. Drivers select it for proven durability under high stress.

Key Features

  • Full-Face 6-Puck Kevlar Disc: Increases surface area for torque transfer up to 515 ft/lbs with precise control and reduced slippage during aggressive shifts
  • High Clamp Load Pressure Plate: Increases holding power over stock for modified engines without excessive pedal effort for consistent performance
  • Complete Kit Contents: Includes pressure plate throwout bearing pilot bearing and alignment tool for straightforward assembly and immediate usability
  • Single Mass Flywheel Compatible: Works with OEM dual mass or lightweight single mass flywheels to reduce rotational mass and improve throttle response
  • Part Number SN233H: Direct bolt-in replacement for RB20DET RB25DET transmissions in S13 S14 chassis

Product Notes

  • Designed for street track and autocross use with proper break-in procedure of 500 miles easy driving
  • Inspect flywheel condition prior to installation resurfacing may be required for flat smooth surface
  • Ships in protective box measuring 14in x 14in x 6in with product weight of 28 lbs

Installation Notes

  • Professional installation recommended.
  • Flywheel must be resurfaced to 0.005in maximum runout or replaced with SFI-rated single mass flywheel
  • Torque pressure plate bolts to 22 ft/lbs in crisscross pattern using included hardware

This Part Fits

Year Make Model Submodel
1989-1994 Nissan 240SX S13 RB20DET/RB25DET
1995-1998 Nissan 240SX S14 RB20DET/RB25DET
1989-1994 Nissan Silvia S13 RB20DET/RB25DET
1995-1999 Nissan Silvia S14 RB20DET/RB25DET
1989-1996 Nissan 180SX RPS13 RB20DET/RB25DET

Why Choose SPEC?

  • Established leader in motorsport clutches with 20+ years of real-world testing in drag road race and rally
  • Manufactured in the USA with premium materials for consistent quality and long service life
  • Precision-machined components ensure perfect fitment and operation in demanding RB swap builds

Frequently Asked Questions

  • Q: Will this fit my S14 240SX with RB25DET swap?
    A: Yes SN233H bolts directly to RB25DET bellhousing and works with stock S14 transmission or upgraded units like CD009
  • Q: What material is the clutch disc made from?
    A: The disc uses high-temperature resistant Kevlar buttons on a full-face design for superior heat dissipation and grip under load
  • Q: What warranty coverage is provided?
    A: SPEC offers a limited warranty against defects in materials and workmanship contact manufacturer for full terms

Shipping & Handling

  • Method: UPS Ground or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Secure cardboard box 14in x 14in x 6in
  • Weight: 28 lbs

Request For Information

Have questions about Spec RB25/20 Stage 2+ Clutch Kit? Fill out the form below and we'll get back to you by the next business day.
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