ACT 1993 Mazda RX-7 HD-M/Perf Street Sprung Clutch Kit
For a 1993 Mazda RX-7 that drives on the street with an exhaust, intake and more boost, the usual problem is a factory clutch that starts to slip once the second turbo comes online. The ACT ZX6-HDSS is the most streetable step up for the FD: a Heavy Duty pressure plate, an organic sprung street disc and ACT's Monoloc collar for the car's pull-type release, all rated well above stock while keeping a smooth takeoff.
The FD pairs the sequential twin-turbo 13B-REW rotary with a five-speed manual and a pull-type clutch, where the release bearing pulls the pressure plate diaphragm toward the gearbox instead of pushing it. ACT rates the ZX6-HDSS at 400 ft-lb at the crank, 42 percent over the factory clutch. The MZ028 Heavy Duty pressure plate raises clamp load with ACT's diaphragm design, and ACT expects pedal effort to rise 15 to 40 percent over stock with its Heavy Duty plates. The 3000206 disc is a 240 mm (9.4 in) organic street disc with a sprung hub, high copper content for heat transfer and a steel-backed lining. ACT describes the feel as light to moderate pedal effort with smooth, positive engagement and OE to mild gear rattle.
The Monoloc is a one-piece hardened chromoly collar that replaces the two-piece wedge collar and wire ring on the pull-type release. ACT says it keeps the bearing and pressure plate loaded evenly so the release stays aligned.
Do a fourth-gear pull from about 3,000 rpm at full boost and watch the tach against the speedometer. Before condemning the clutch, check the slave cylinder, line and fluid, since a tired FD hydraulic system can cause poor release. With the gearbox out, inspect the release collar, fork and pivot for wear. Our transmission slipping diagnosis guide covers the road test and rebuild vs. replace helps if the gearbox itself is suspect.
This listing is for the 1993 Mazda RX-7. ACT's chart covers US-market 1993 to 1995 RX-7 Base, Touring, R1 and R2, plus 1996 to 2002 JDM and 1996 to 1998 European FD cars, all with a 1 in input shaft. It does not fit the earlier FC RX-7. If your car is an import or has a swapped gearbox, send us the year and VIN or chassis number. More FD options are in our clutch and rebuild kits collection.
A flywheel is not included. Resurface the stock unit or upgrade to the ACT Streetlite flywheel with CW02 counterweight, or a 13.2 lb steel flywheel for the 89 to 95 RX-7. Center the disc with the AT03 tool, tighten the pressure plate bolts in a crisscross sequence and follow ACT's Monoloc instructions when engaging the bearing. Bleed with the fluid specified on the reservoir cap. ACT recommends 300 to 500 miles of mild, stop-and-go driving to break in its organic street discs before hard use. If you need more holding power, the ZX6-XTSS uses a stronger Xtreme plate with the same style of street disc.
| Brand | ACT |
| Part number | ZX6-HDSS |
| Fits | ACT 1993 Mazda RX-7 HD-M/Perf Street Sprung Clutch Kit |
| Vehicle fitment | Mazda Rx-7 Hd-M/Perf (1993) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Yes. ACT lists the ZX6-HDSS for US-market 1993 to 1995 RX-7 models, plus JDM 1996 to 2002 and Euro 1996 to 1998 FD cars. It does not fit the FC RX-7.
ACT rates it at 400 ft-lb at the crank, 42 percent over the factory clutch.
No. Resurface the stock flywheel or upgrade to an ACT Streetlite with the CW02 counterweight or a steel lightweight flywheel for the FD.
Somewhat. ACT expects 15 to 40 percent more pedal effort with its Heavy Duty plates, and describes this kit as light to moderate effort with smooth engagement.
Yes. ACT recommends 300 to 500 miles of mild driving, such as stop-and-go city use, before racing or spirited driving. Avoid overheating the clutch during that time.
