Spec Nissan RB25/RB20 Stage 5 Clutch Kit
The SPEC SN235 is the top single-disc clutch SPEC makes for the push-type RB20DET and RB25DET Skyline: the R32 GTS-t, the R33 GTS25t and the many RB-swapped S-chassis and drift cars built around those gearboxes. SPEC rates it at 740 ft-lb of torque. It is meant for the big-turbo RB that has already burned through a Stage 2 or Stage 3 disc and needs maximum grip from one plate, and the owner who accepts a race-car pedal to get it.
SPEC describes Stage 5 as a full-metallic disc with the highest friction coefficient in its single-disc range, and is direct about the trade: street drivable, but not street-friendly. A metallic disc bites hard and almost on/off, which is what you want on a drag launch or a clutch-kick drift entry, and what makes slow traffic tiring. It also wears the flywheel face faster than an organic or Kevlar disc. The jump in rating is large: the SPEC SN233F Stage 3+ for the same cars is rated 610 ft-lb with a carbon semi-metallic full face that is far easier to live with. If your RB makes less than about 600 ft-lb, the 3+ is usually the smarter buy.
RB push-type cars use a hydraulic release, and a tired slave cylinder or air in the line causes poor release that owners often blame on the clutch, so bleed with fresh brake fluid first. Then load the car in a high gear at low rpm and bring on full boost. A tach that runs ahead of road speed means the disc is slipping. On a big-power build, log boost and torque so you know what the clutch actually has to hold before picking a stage. Our slipping diagnosis guide covers the load test and the flare vs. slip guide explains how to read what you see.
Our listing is titled for the Nissan RB25 and RB20. SPEC's fit chart for this part number lists the Skyline R33 GTS push type (1993-1998), the Skyline R32 GTS-t and GTR push type (1989-1994) and the R31 2.0L (1985-1989), and the same chart also names several SR20DET Silvia and 200SX, 300ZX and Nissan 2.4L truck applications. The pull-type RB26DETT GT-R does not take this kit; see the SN262 family for those. RB25 Neo and R34 GT-t cars are not on SPEC's chart, and swapped cars vary, so match your gearbox and release type, or send us the chassis code, engine and transmission before ordering. Compare every option in our clutch and rebuild kit collection.
| Brand | SPEC |
| Part number | SN235 |
| Fits | Spec Nissan RB25/RB20 Stage 5 Clutch Kit |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Yes, SPEC lists the R33 GTS push type 1993-1998 and the R32 GTS-T push type 1989-1994. Confirm your car still runs the push-type gearbox, especially on swapped or imported cars.
SPEC calls Stage 5 street drivable but not street-friendly. The full-metallic disc engages abruptly and chatters more in traffic. For a car that sees regular commuting, the Stage 3+ SN233F is the better pick.
SPEC rates the SN235 at 740 ft-lb. The Stage 3+ SN233F for the same cars is rated 610 ft-lb and the Stage 2 SN232 is lower again.
The R34 is not on SPEC's chart for this kit, and the RB26DETT GT-R uses a pull-type clutch that needs a different kit such as the SN262. Send us your chassis code before ordering.
No flywheel is included. Resurface yours if it is in spec or replace it if it is cracked or heat-checked; a metallic disc on a glazed face will chatter badly.
