Description
Built specifically around the fitment requirements of 2004–2014 Impreza / 2006–2009 Legacy / 2015–2020 WRX STI (Subaru), the EXEDY Performance Clutch Kit – 2004–2014 Impreza / 2006–2009 Legacy / 2015–2020 WRX STI (Subaru) gives owners a direct way to choose EXEDY hardware matched to enthusiast street, autocross, HPDE, and modified performance builds.
EXEDY Engineering Background
Founded in Japan in 1923, EXEDY built its reputation as Daikin Clutch before becoming one of the best-known global names in clutch and driveline engineering. Its background spans OEM supply and purpose-built performance hardware, giving the brand unusual depth from factory-style service parts to multi-plate racing systems.
Why This Part Fits the Build
EXEDY's performance single- and multi-plate systems are intended to raise torque capacity and heat tolerance while matching the engagement characteristics to the car's intended use. Stage 1 uses an organic friction strategy for the most street-friendly behavior; Stage 2 moves to cerametallic friction for harder use; Hyper systems add dedicated flywheel and multi-plate architecture for substantially higher-output builds.
Choose the least aggressive configuration that comfortably covers the engine's torque and heat load. That approach normally gives the best balance of drivability, service life, transmission friendliness, and track durability.
Available Configurations
This parent listing contains multiple EXEDY configurations for the same application family. The differences below are functional and should be selected around torque demand, heat load, and acceptable engagement behavior.
| Configuration | EXEDY Part Number | Construction / Character | Torque Capacity | Recommended Use |
|---|---|---|---|---|
| Hyper Single | FH02SD1 | Single-plate Hyper clutch with dedicated lightweight flywheel; sprung-center disc, pull-type cover. Performance-oriented but more manageable than multi-plate systems. | Application-specific | Moderately to highly modified street/track cars that do not require a twin |
| Hyper Triple | FM023SB | Triple-plate Hyper system with lightweight chromoly flywheel; pull-type cover. Competition-focused; not recommended by EXEDY as a general street setup. | EXEDY general Hyper Triple family rating: approximately 800 ft-lb at the flywheel; verify the exact SKU/application | Very high-power drag/race builds requiring multi-plate capacity |
| Hyper Twin (FM022HD) | FM022HD | Twin-plate Hyper system with lightweight chromoly flywheel; sprung-center disc. Direct, motorsport-oriented engagement. | EXEDY general Hyper Twin family rating: approximately 500 ft-lb at the flywheel; verify the exact SKU/application | High-power street, drag, road-race and rally applications |
| Hyper Twin (FM022SD) | FM022SD | Twin-plate Hyper system with lightweight chromoly flywheel; sprung-center disc, pull-type cover. Direct, motorsport-oriented engagement. | EXEDY general Hyper Twin family rating: approximately 500 ft-lb at the flywheel; verify the exact SKU/application | High-power street, drag, road-race and rally applications |
Selection Notes
For 2004–2014 Impreza / 2006–2009 Legacy / 2015–2020 WRX STI (Subaru), the Hyper Single is the more sensible choice when the car still sees meaningful street mileage and the power level does not justify two friction discs. The Hyper Twin is intended for a materially higher torque/heat load and is better suited to serious forced-induction, drag, or repeated road-course use.
Key Technical Specifications
- Clamp Load: Stage 1/2 covers are designed around roughly 40% higher clamping load than the genuine part
- Pedal Effort: Typical Stage 1/2 increase is approximately 20–35%, application dependent
- Flywheel Compatibility: Stage 1/2 generally use the OEM flywheel unless noted; Hyper systems include/require their dedicated flywheel
- Certification: EXEDY Stage 1, Stage 2 and Lightweight Flywheel products are SFI 1.1 certified
- Vehicle Application: 2004–2014 Impreza / 2006–2009 Legacy / 2015–2020 WRX STI (Subaru)
- EXEDY SKUs: FH02SD1, FM023SB, FM022HD, FM022SD
Application-specific construction notes: Sprung-center disc, Pull-type cover, Cerametallic friction.
Fitment note: Confirm the vehicle's engine/transmission combination and the clutch or flywheel currently installed before ordering. This is especially important on cars with prior single-mass conversions, transmission swaps, or existing EXEDY Hyper hardware.