Clutch Masters 89-93 Toyota Supra 2.5L Turbo 5-Speed 1JZ (R154 Trans) FX300 Clutch Kit
Clutch Masters 16063-HDTZ is the FX300 street clutch for the MA70-chassis Toyota Supra running a turbo inline-six through the R154 5-speed. The listing is built around the 1989-1993 2.5L 1JZ cars, and Clutch Masters also catalogs the same part number for the 1986-1993 3.0L 7M-GTE turbo Supra with the R154. If your Supra flares rpm when boost comes in, judders off the line, or you have just raised boost on a tired original clutch, this is the kit built for that job.
The R154 is a push-type, hydraulically released 5-speed, and in these cars it is the weak link only when the clutch cannot hold what the turbo six makes. A boosted 1JZ or 7M-GTE builds torque fast once the turbo spools, and a worn factory disc or a fatigued diaphragm lets the crank spin faster than the input shaft. The FX300 pairs Clutch Masters' Power Plus I heavy-duty pressure plate with a steel-backed, segmented Kevlar disc. Segmenting the Kevlar raises pressure per square inch on the facing, which is where the extra holding capacity comes from, and Clutch Masters rates the system at 110 percent more holding capacity than stock.
Clutch Masters aims this kit at a highly tuned naturally aspirated engine, a medium-boost turbo or supercharger, or up to 100 hp of nitrous. That fits a 1JZ with bolt-ons and moderate boost well. Pedal pressure goes up only slightly, engagement stays positive, and the Kevlar compound is non-abrasive, so it does not score the flywheel. It is a street clutch; Clutch Masters does not recommend it for track use.
A manual clutch does not set trouble codes, so the diagnosis is done by feel and inspection.
On a 30-year-old Supra, rule out the hydraulics first. Check the clutch master and slave for leaks, look at the fluid color, and confirm the pedal returns fully, because a slave that will not retract holds the plate partly released and feels exactly like slip. Then do a high-gear, low-rpm, full-throttle pull and watch whether rpm rises faster than speed. Our slipping diagnosis guide walks through that test, and flare versus slip helps you describe what you feel. While the transmission is out, look for oil on the bellhousing floor; a leaking rear main seal will contaminate any new disc.
Clutch Masters lists 16063-HDTZ for two Supra combinations: the 1989-1993 Toyota Supra 2.5L 1JZ turbo with the R154 5-speed, and the 1986-1993 Toyota Supra 3.0L 7M-GTE turbo with the R154 5-speed. Toyota fitted the 1JZ-GTE to the Japanese-market Supra 2.5 Twin Turbo R (JZA70), and many 1JZ cars in North America are swaps, so what matters is that your car has the R154 and a matching flywheel and release setup. If the swap uses a different transmission, adapter or flywheel, send us the year, VIN and parts list and we will check before it ships. More Supra clutch options are in our rebuild kits and clutch section.
Need more holding power for big boost? The FX400 16063-HDCL ceramic kit covers the same cars. On a stock-turbo 7M-GTE, the ACT TS2-HDSS is an organic-disc alternative.
No flywheel comes in this kit. Have the flywheel resurfaced or replace it if it is heat-checked, cracked, or below minimum thickness. Clutch Masters notes that lightweight flywheels, driving style and the break-in all affect clutch life. Pull the old pilot bearing with a slide-hammer pilot bearing puller, center the disc with the supplied tool, and tighten the pressure plate bolts gradually in a star pattern. Bleed the hydraulics with the fluid named on the master cylinder cap. Clutch Masters requires a minimum 500-mile break-in with normal, easy engagements before any launches or full-boost pulls.
| Brand | Clutch Masters |
| Part number | 16063-HDTZ |
| Fits | Clutch Masters 89-93 Toyota Supra 2.5L Turbo 5-Speed 1JZ (R154 Trans) FX300 Clutch Kit |
| Vehicle fitment | Toyota Supra (1989-1993) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Yes. Clutch Masters lists the same part number for the 1986-1993 Supra 3.0L 7M-GTE turbo and the 1989-1993 Supra 2.5L 1JZ, both with the R154 5-speed.
No. Reuse a resurfaced flywheel in good condition or replace it if it is cracked, heat-checked or under minimum thickness.
Clutch Masters recommends the FX300 for street use, not track use. For heavier abuse or higher boost, look at their FX400 ceramic kit for the same cars.
Clutch Masters describes only a slight increase in pedal pressure with the FX300, with positive engagement.
At least 500 miles of normal driving with easy engagements, per Clutch Masters, before launches or full-boost pulls.
It fits the R154 transmission setup the maker lists. Send us the year, VIN and your swap parts (flywheel, release bearing, slave) and we will confirm before shipping.
