Spec 93-98 Toyota Supra 3.0L 2JZ-GE to T56 Magnum P-Trim Super Twin Disc Clutch Kit
Swapping a TREMEC T56 Magnum behind a Mk4 Supra 2JZ is one of the most popular ways to get a strong six-speed into a big-power Supra build, and the clutch is where most of those swaps live or die. This Spec P-Trim Super Twin, part number ST63PT-2-870-MK4, is a twin-disc clutch and flywheel package for a 1993-1998 Toyota Supra 3.0L 2JZ-GE engine mated to a T56 Magnum. It is not a replacement for the factory gearbox clutch; it is built for the swap.
A 2JZ making serious boosted power quickly outruns any single-disc clutch that still has a usable pedal. The Super Twin splits the work across two discs with an intermediate plate, so it holds torque through friction area instead of a huge spring load. Spec describes the Super Twin line as all-billet, built from aircraft-grade aluminum and high-carbon steel, with a no-shim bolt-in install, and states that the units can be rebuilt by Spec or by the owner. The kit includes the flywheel and hardware. For the ST63PT-2 P-Trim, the published torque capacity is 1100 ft-lb, well past what the transmission itself is rated for: TREMEC rates the Magnum at 700 lb-ft. That gap is deliberate, since a clutch that slips before the gearbox breaks is a warning, while one that holds more than the gearbox can take passes every hit straight into the gears.
If you already have a clutch in the swap, confirm slip with a datalog: engine speed rising faster than wheel speed in a high-gear pull. Check the hydraulic release system for leaks and correct bearing clearance first, because an incorrectly set release bearing causes drag or slip that no clutch will fix. Then match the kit to your parts: the Super Twin must suit your exact bellhousing, flywheel bolt pattern and T56 Magnum input shaft. Compare it against the McLeod RXT twin for 2JZ to T56 and the Clutch Masters FX850 twin for 2JZ/1JZ to T56 if you are still choosing. Our manual transmission repair cost guide covers what clutch labor tends to cost.
Listed for the 1993-1998 Toyota Supra 3.0L 2JZ-GE engine with a TREMEC T56 Magnum six-speed installed through an adapter or swap bellhousing. The factory Supra transmissions are not part of this fitment. Swap kits differ in bellhousing depth and release-bearing setup, so confirm your bellhousing brand, input shaft spline and hydraulic bearing before ordering. If you are unsure, send us your swap-kit details and the Supra's year and VIN and we will check it. For a lighter-duty street option on the same swap, see the McLeod RST twin for 2JZ to T56.
| Brand | SPEC |
| Part number | ST63PT-2-870-MK4 |
| Fits | Spec 93-98 Toyota Supra 3.0L 2JZ-GE to T56 Magnum P-Trim Super Twin Disc Clutch Kit |
| Vehicle fitment | Toyota Supra (1993-1998) |
| Type | Clutch Kits - Multi |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. This kit is for a 2JZ-GE Supra that has been converted to a TREMEC T56 Magnum six-speed. The factory transmissions use different clutch setups.
Spec lists 1100 ft-lb for the ST63PT-2 P-Trim. TREMEC rates the Magnum gearbox at 700 lb-ft, so the transmission, not this clutch, will usually be the limit.
Yes. Spec includes the billet flywheel and hardware with the Super Twin kit.
Yes. Spec states the Super Twin can be rebuilt by Spec or the end user, and replacement friction components are available, so you do not have to buy a whole new kit when the discs wear.
Your Supra's year and VIN, the bellhousing or swap kit brand, and the hydraulic release bearing you are using. Bellhousing depth and bearing setup vary between swap kits.
