Competition Clutch 1989-1998 Toyota Supra Non-Turbo 10lb Steel Flywheel
The Competition Clutch 2-607-2STU is a 10.00 lb one-piece forged steel flywheel for the naturally aspirated Toyota Supra and the Lexus SC300 3.0L with a manual gearbox. Owners usually land here in one of two ways: the stock flywheel is heat-checked or too worn to resurface during a clutch job, or the car is becoming a track, drift or NA-T turbo build and the owner wants the engine to rev up and fall back faster. This is the ultra-light STU version, the lightest steel option Competition Clutch offers for this engine family.
The non-turbo Supra pairs its inline six, the 7M-GE in the third-generation car and the 2JZ-GE in the fourth-generation car and SC300, with the Toyota W58 five-speed. The flywheel bolts to the crankshaft and does three jobs: it gives the clutch disc a friction face to clamp against, it carries the ring gear for the starter, and its mass smooths out the engine between firing pulses. Competition Clutch machines the STU line with less material at the perimeter, where weight has the biggest effect on rotating inertia. The result is quicker revving, easier rev-matching on heel-toe downshifts, and less time waiting for rpm to drop between upshifts.
The maker builds it from 4140 forged steel as a single piece, so there is no bolted friction insert to work loose, and recommends the STU flywheels for forced-induction conversions, road racing, drift and rally, with Stage 3 and higher clutch kits. On a stock street car, a lighter flywheel can make low-rpm takeoffs and idle a little less forgiving and may bring more gear rattle. If you want the same fitment with more mass, the 2-607-2ST 13.47 lb flywheel is the heavier street-leaning choice. Our lightweight vs stock flywheel guide covers the trade-offs.
Flywheel problems usually show up as clutch problems first. Road-test for slip in fourth gear at full throttle from low rpm, and use our slipping diagnosis guide and flare vs slip to rule out other causes. Check the clutch hydraulics and look for oil at the bellhousing before tearing in. Once the gearbox is out, inspect the face for cracks and hard spots and measure runout; resurface vs replace explains when machining stops being an option.
Our listing is titled for the 1989-1998 Toyota Supra non-turbo. Competition Clutch lists 2-607-2STU for the 1988-1997 Toyota Supra and the 1992-1997 Lexus SC300 3.0L non-turbo, naming both the 2JZ-GE and the 7M-GE. The two lists do not match at the ends, so if your car is a 1988 or a 1998, or has a swapped engine or gearbox, confirm before ordering. Turbo Supras use different flywheels. Match the crank bolt pattern and clutch diameter of your current setup, or send us your year, VIN and transmission and we will check it. More parts are in our hard parts section.
Clean the crank flange and the new flywheel face of any protective coating with brake cleaner, install new flywheel bolts with thread locker, and torque them in a crisscross sequence to the factory specification. Replace the pilot bearing while the flywheel is off. Pair it with a matching clutch: Competition Clutch points the STU line toward Stage 3 and up kits, such as the 16085 Stage 3 segmented ceramic kit. Bleed the hydraulics with fresh brake fluid, then shift as often as possible for the first 500 miles, which is Competition Clutch's break-in advice, before any hard launches. Our break-in guide has more detail.
| Brand | Competition Clutch |
| Part number | 2-607-2STU |
| Fits | Competition Clutch 1989-1998 Toyota Supra Non-Turbo 10lb Steel Flywheel |
| Vehicle fitment | Toyota Supra Non-Turbo 10Lb Steel (1989-1998) |
| Type | Flywheels |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. 2-607-2STU is listed for the non-turbo 7M-GE and 2JZ-GE cars with the W58 five-speed, plus the SC300 3.0L. Turbo Supras use different gearboxes and flywheels.
Competition Clutch lists it at 10.00 lb. The heavier 2-607-2ST version for the same application is 13.47 lb.
Lighter flywheels store less energy, so idle and low-rpm takeoffs can feel less smooth and some gearbox rattle is common. For a mostly street car, the heavier ST version is the gentler choice.
Competition Clutch recommends its STU flywheels with Stage 3 and higher clutch kits. Make sure the clutch you choose is listed for the same non-turbo Supra or SC300 application.
Competition Clutch lists this flywheel as not SFI approved. If your race class requires an SFI-rated flywheel, check the rules before buying.
