Spec SR20DET Stage 2 Clutch Kit
SPEC SN332 is the Stage 2 single disc clutch kit for the SR20DET in the S13 and S14 chassis: the 180SX, 200SX and Silvia turbo cars, and the many 1989-1998 Nissan 240SX that have been swapped to SR20DET power. It is the kit people look for when a turbo upgrade or tune has the stock clutch flaring in third gear, when the engagement point has crept to the top of the pedal, or when a drift car needs a clutch that survives repeated kicks without turning into an on-off switch in traffic.
The SR20DET makes its torque in a hurry once the turbo spools, and boost, injectors and a tune push it well past what the original clutch was sized for. Clutch capacity comes from clamp load and the friction material on the disc. SPEC describes its Stage 2 material as Kevlar with a steel backing, chosen for smooth engagement and long life rather than the bite of a puck-style race disc. That makes SN332 the step above SPEC Stage 1 for a car that is driven on the street but sees boost, track days or drift events.
The SPEC SR20DET ladder runs from the SN331 Stage 1 through this Stage 2 to the SN333 Stage 3 carbon semi-metallic kit. If the car is under a mild tune and spends most of its life on the street, Stage 2 is usually the sweet spot. SPEC catalogs the S15 6-speed version, SN332-5, at 439 ft-lb; we do not quote a separate figure for the S13/S14 kit because published numbers for it disagree.
Do a fourth gear roll-on from low rpm and watch the tach against road speed; if rpm jumps while speed lags at peak boost, the clutch is slipping. Rule out the hydraulics first, because a tired slave cylinder or old fluid changes engagement, and look for oil at the bellhousing seam from the rear main seal. Our slipping diagnosis guide has the full test, and the clutch slipping symptoms guide covers manual-specific causes. For budgeting the job, see manual vs automatic repair cost.
SN332 is the SPEC Stage 2 kit for the S13 and S14 SR20DET with the standard 5-speed and a single mass flywheel. Dealer catalogs list it for 1989-1998 240SX with an SR20DET swap and the S13/S14 Silvia, 180SX and 200SX turbo cars; their year ranges vary slightly, so check yours. Two look-alike numbers are different parts: SPEC lists SN332-5 for the 1999-2002 S15 Silvia 6-speed with the dual mass flywheel, and SN332-760 for 240SX cars using the 240 mm upgraded diameter, which must run a SPEC billet flywheel. If your car has a KA24DE, this kit does not fit. Send us the chassis, engine and gearbox and we will confirm before it ships.
| Brand | SPEC |
| Part number | SN332 |
| Fits | Spec SR20DET Stage 2 Clutch Kit |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. SPEC lists SN332-5 for the 1999-2002 S15 SR20DET 6-speed with the dual mass flywheel. SN332 is the S13/S14 5-speed version.
No. This kit is for the SR20DET. A KA24DE 240SX needs a KA-specific clutch.
A fresh or resurfaced single mass SR20DET flywheel. SPEC's SN22A aluminum flywheel for the S13/S14 SR20DET is the matching billet option.
SPEC uses Kevlar with steel backing for Stage 2, which is aimed at smooth engagement and long life. It is a common choice for street-driven boosted SR20DET cars.
The pilot bearing, the rear main seal if it weeps, and the brake fluid in the clutch hydraulics. Inspect the fork pivot while the gearbox is out.
