ACT 1987 Mazda RX-7 XT/Perf Street Sprung Clutch Kit
The ACT Z65-XTSS is a street clutch kit for the FC-chassis Mazda RX-7 Turbo II with the 13B turbocharged rotary and 5-speed manual. Our listing is titled for the 1987 car, and ACT catalogs the same kit for every US RX-7 Turbo from 1986 through 1991, including the 1988 10th Anniversary model. It is aimed at owners who have added boost, a larger turbo or a better intercooler and now feel the factory clutch slip as boost builds, but who still drive the car on the street and do not want the harsh bite of a puck-style race disc.
A rotary makes its power high in the rev range, and the Turbo II adds a hard surge of torque when boost arrives. That surge is where a tired or stock clutch lets go. The Z65-XTSS pairs ACT's Xtreme pressure plate, part MZ010X, with the 3000204 Performance Street sprung disc. The Xtreme diaphragm is ACT's highest clamp-load street design, and the disc is a full-face organic lining with high copper content for heat transfer, bonded to a steel backing for burst strength. ACT uses a reduced marcel on these discs for quicker shifts, and the sprung hub still damps driveline shock on takeoff.
ACT rates the kit at 440 ft-lb of torque at the crank, 80 percent over the original clutch, with a 240 mm (9.4 in) disc on a 1 in input shaft. Pedal effort is moderate to heavy, engagement is smooth, and gear rattle runs from factory level to mild. Compared with the six-pad Z65-XTG6 race kit, which uses the same Xtreme plate, this one trades some holding power for a much easier drive in traffic.
Warm the car up, roll into fourth around 3,000 rpm and go to full throttle. If the tach jumps ahead of road speed when the turbo spools, the clutch is slipping. Our slipping diagnosis guide covers the test, and flare vs. slip explains how each one feels. On a 30-year-old car, also check the clutch master and slave cylinders and look for oil on the bellhousing, since a leaking rear seal will make any new clutch slip.
Our listing covers the 1987 Mazda RX-7 Turbo. ACT lists Z65-XTSS for the 1986-1991 RX-7 Turbo (Turbo II), including the 1988 10th Anniversary. It is not cataloged for the non-turbo FC RX-7, the 1979-1985 first-generation cars or the 1993-1995 FD twin-turbo. If your car has a swapped engine, an aftermarket flywheel or a gearbox from another car, send us the year and VIN so we can confirm. The milder Z65-HDSS heavy duty kit covers the same cars with a lighter pedal.
| Brand | ACT |
| Part number | Z65-XTSS |
| Fits | ACT 1987 Mazda RX-7 XT/Perf Street Sprung Clutch Kit |
| Vehicle fitment | Mazda Rx-7 Xt/Perf (1987) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
ACT catalogs it only for the 1986-1991 RX-7 Turbo. Non-turbo FC cars use a different clutch, so send us your VIN if you are unsure which model you have.
No. It includes the pressure plate, disc, release bearing, pilot bearing and alignment tool. Resurface your flywheel, or on a 1989-1991 Turbo use the ACT 600145-02 Streetlite kit with its counterweight.
ACT describes it as moderate to heavy. The Xtreme pressure plate raises clamp load, so the pedal is firmer than stock. Healthy master and slave cylinders make a big difference in how it feels.
ACT rates it at 440 ft-lb at the crank, 80 percent over the factory clutch. For more than that, or for regular drag launches, ACT's six-pad Z65-XTG6 is rated higher.
The kit already has the release and pilot bearings. Check the rear oil seal, the release fork and pivot, and the clutch slave cylinder, and fix any leak before the new disc goes in.
