Clutch kits and discs
A worn clutch is a routine job on an NA or NB. This page lists the kits and discs sold, and what owners say about choosing between a factory-style kit and a performance one. It is not a repair guide.
How to read it. Seller descriptions are from their own pages, and owner accounts from Miata.net forum threads, both read on 1 October 2026 and dated below. Owners disagree, and none of it was tested by me. There are no prices on this page.
Kits and discs
| Seller | What it says it offers | Fits (as stated) |
|---|---|---|
| Moss Miata | Exedy OEM replacement kit: pressure plate, clutch disc, throw-out bearing, pilot bearing and alignment tool. It says Mazda fitted Exedy clutches at the factory and these are the same. 12-month warranty, not covering labor | NA, NB and NC, 1990-2015; the page does not separate the 1.6 and 1.8 litre engines or the Mazdaspeed |
| Leroy Engineering (Chardon, Ohio) | "complete" kit: a flywheel, an Exedy clutch assembly, Mazda OEM rear main seal, Mazda OEM transmission seal kit and Red Line MT-90 gearbox oil | a choice of 1990-93 5-speed, 1994-2005 5-speed or 1999-2005 6-speed |
| Flyin' Miata | a replacement friction disc only, for its Level 1 and Level 2 performance clutches: a thinner disc and a lower-profile spring to cut pedal travel, steelback copper woven organic friction material; 90-day warranty | NA 1990-97, NB 1999-2005 and the 2004-05 Mazdaspeed; mainly the 1.8 litre, and not the 1.6 unless used with 1.8 parts |
What owners say
From "which clutch kit to get?" (September 2012, NB), where the poster was choosing between two performance kits with lightened flywheels:
- Stock power: use the factory-style kit. Most replies said an OEM-type Exedy kit is fine unless you add power. One owner checked the markings on an OEM-type pressure plate against the one he removed and found them the same, from the same maker in Osaka. Another said such kits are what the dealer sells as a "value" kit, and that a worn pressure plate often gets stiffer before it fails.
- When to go up. One poster said to upgrade now if you plan forced induction within about 50,000 miles. Another noted a performance kit adds pedal effort, which a poster who autocrosses did not mind; a different poster said a worn clutch or an out-of-adjustment linkage, not the kit, is the usual reason a stock clutch engages slowly, and a longer clutch line and a good bleed help.
- Lighter flywheels. A clutch maker's representative in the thread said any lighter flywheel brings some gear noise from the transmission, which the heavy factory flywheel had been damping, and that it is not harmful. Owners with Flyin' Miata and ACT setups called the noise slight, said pedal effort was close to stock, and one said the friction zone narrows after a few thousand miles.
- While it is apart. One poster listed the rear crank seal, pilot bearing, release bearing and the transmission's front seal as things not to skip.
Search results show other threads comparing the Exedy Stage 1 and Flyin' Miata kits; I did not read them.
Not covered yet
- Flywheels sold on their own, and pressure plates for the performance kits.
- The clutch hydraulics have their own page: master and slave cylinders.
- Good-Win Racing's and RSpeed's clutch kits, which I did not read.
© 2026 Fischer Interactive LLC. Written for the Ref Sensor app's Miata users. The seller's page is the authority.