Clutch Masters 17-20 Fiat 124 Spyder 1.4L Turbo FX100 Single Disc Clutch Kit

The Clutch Masters FX100 (part 05703-HD00) is the mildest upgrade Clutch Masters makes for the 2017-2020 Fiat 124 Spider 1.4L turbo. It suits the owner whose factory clutch is worn out or just starting to slip, who has added an intake or exhaust, and who wants a replacement that feels like the original but clamps harder and lasts longer. If your car is heavily tuned or running more boost, skip ahead to the fitment section for the stronger kits.

What the FX100 does in a 124 Spider

Under the Mazda-built body, the 124 Spider runs Fiat's 1.4L MultiAir turbo, rated at 160 hp and 184 lb-ft in North American trim, through the six-speed manual from the previous NC Miata. That torque shows up low in the rev range, so even a stock car leans on its clutch every time boost builds in second or third gear. A disc that has lost thickness starts to slip right there first.

The FX100 is Clutch Masters' entry street kit. It pairs their Power Plus I heavy-duty pressure plate with a steel-backed organic disc riding on a Marcel spring wafer, the same type of cushioned facing the factory clutch uses. Clutch Masters rates it at a 70 percent increase in holding capacity and says engagement and release feel normal, pedal effort rises only slightly and life should exceed stock. They pitch it at cars with minor bolt-ons, which on this engine means stock or near-stock boost, not a big-turbo build.

Symptoms that point to the clutch

• Revs flare without the car accelerating as boost comes in during a third or fourth gear pull
• The pedal now engages near the very top of its travel
• Shudder pulling away from a stop, worse on an incline
• A burnt smell after stop-and-go traffic or a steep driveway
• A growl or chirp that changes when the pedal is pressed, which points at the release bearing
• Hard engagement of first or reverse because the clutch is not fully releasing

How to confirm before you buy

Boost faults can feel like slip, so make sure the car is reaching normal boost first. Then pull in fourth from low rpm at full throttle and watch the tach against road speed; if rpm jumps ahead, the disc is slipping. Check the clutch reservoir level and look for fluid at the slave cylinder, since a hydraulic leak causes drag and grinding that a new disc will not cure. Oil at the bottom of the bellhousing means a rear main seal leak that has to be fixed during the job. Our slipping diagnosis guide covers the road test, and shift flare vs slip explains the difference between a flare and a true slip.

Fitment

Clutch Masters lists 05703-HD00 for the 2017-2020 Fiat 124 Spider with the 1.4L turbo. The 124 does not share its clutch with the ND Mazda MX-5, so a Miata kit is not a substitute. Fiat spelled it Spider; our listing title uses Spyder, but it is the same car. If you have added a tune or bigger turbo, the FX100 is likely too light: the FX250 dual-friction kit or the FX350 kit are the next steps. Send us your year and VIN if you want us to confirm before it ships.

Install notes

• Have the factory flywheel resurfaced or replaced; a glazed or heat-spotted face will cause chatter with any new disc. Clutch Masters says its FW-703-AL aluminum flywheel works with OEM-style clutches and its FX kits if you want a lighter assembly.
• Use the supplied alignment tool to center the disc, and tighten the pressure plate bolts gradually in a star pattern to the factory torque.
• Replace the pilot bearing if your car uses one; the kit includes one where the application calls for it.
• Bleed the clutch hydraulics with fresh brake fluid of the type on the reservoir cap.
• Check the gearbox oil while it is out and refill with the gear oil grade in the owner's manual.
• Drive gently for the first few hundred miles so the facing beds in evenly.

Weighing a clutch job against other drivetrain work? Our manual transmission repair cost guide lays out typical labor.

Is the FX100 enough for a tuned 124 Spider?

Clutch Masters designs the FX100 for minor bolt-ons. For a tuned car or a larger turbo, the FX250 or FX350 kits hold more torque.

Will it fit the 124 Spider Abarth?

Clutch Masters lists 05703-HD00 for the 2017-2020 124 Spider 1.4L turbo, which is the engine used across the 124 Spider range, Abarth included. Send us your VIN if you want us to confirm before ordering.

Does an ND Miata clutch fit the 124?

No. The 124 uses the NC-type six-speed and a turbo engine, so its clutch is different from the ND MX-5 parts.

Does the kit include a flywheel?

No. It includes the pressure plate, disc, release bearing, pilot bearing where applicable and an alignment tool. Resurface the factory flywheel or upgrade to the FW-703-AL.

Will pedal feel change?

Only slightly. Clutch Masters says pedal pressure rises a little over factory and engagement feels normal.

• Transmission Slipping Diagnosis Guide
• Shift Flare vs Slip: What Is the Difference
• Automatic vs Manual Transmission Repair Cost