Clutch Masters Clutch Kits

The best clutch for a WRX or STI is the one matched to your torque output and how you drive — a stock-style disc for daily driving, a sprung-hub stage 2 or 3 kit for bolt-on power, and a puck-style kit for big-turbo or track builds. Clutch Masters builds some of the most widely trusted staged clutch kits for Subaru platforms, with clear torque ratings at each stage. JDMuscle carries Clutch Masters clutch kits and related hardware for WRX, STI, BRZ, and other applications.

Clutch Masters is known for its FX-series staged kits, which pair a matched pressure plate, disc, and flywheel surface into one bolt-in package. The FX350 is the popular sweet spot: a sprung-fiber full-face disc that holds healthy bolt-on power while keeping street manners reasonable. Clutch Masters also makes clutch master cylinder upgrade kits and the Flow Control Valve (FCV) for fine-tuning pedal engagement feel.

Popular options include the Clutch Masters FX350 sprung-fiber clutch kit and the Clutch Masters Flow Control Valve. Clutch kits are application-specific, so check your year and model carefully before ordering. Compare other staged kits in our clutch category, including ACT and South Bend Clutch, or see flywheels and shifters and bushings. Our guide Best Clutch for WRX explains how to pick the right stage.

Frequently Asked Questions

How do I know which clutch stage I need?

Match the kit's torque rating to your engine's torque — then add headroom. Stage 1 or 2 suits bolt-on daily drivers, stage 3 handles bigger turbos and e85 builds, and race-oriented puck clutches are for track cars. Over-clutching a daily driver just costs pedal comfort.

Is a clutch install something I can do myself?

Clutch replacement requires dropping the transmission — typically a full weekend job with a lift, transmission jack, and experience. Most owners leave it to a shop. Budget for a new throwout bearing and a resurfaced or new flywheel.

Do I need a tune after installing a clutch?

No — the clutch is mechanical and doesn't change engine operation. If the install is part of a bigger power build, the supporting mods (turbo, injectors, intake) are what need the tune.

Why does my new performance clutch chatter?

Aggressive discs grab harder and can chatter at low RPM, especially before break-in. Follow the 500-mile break-in procedure — no hard launches — and most street-stage kits settle in.