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Competition Clutch flywheels are made of 4140 forged steel and are a one-piece design. This helps significantly in reducing the chances of ring gear separation and friction surface warpage. All flywheels can be resurfaced. The correct flywheel step can be obtained in the CCI catalog or by calling us direct. Flywheel weights vary from 8lbs to 18lbs depending on application.
The Lightweight Steel Flywheel (ST suffix)
It is recommended for naturally aspirated and/or street driven applications. This flywheel preserves low-end torque and driveability. Well-suited for Gravity, Stage 1 and Stage 2 clutch applications
SPECIFICATIONS
- One piece ring gear for high durability
- Well suited for Stage 1 and Stage 2 clutch kit applications
- Stamped with 4140 plate with 2000 ton pressure at 1260 degrees
- CNC machined and balanced to O.E. specifications
- Weighs 15lbs
Vehicle Fitment
- 2004 - 2021 Subaru STI
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.
| SKU | comp2-721-ST |
|---|---|
| Manufacturer's Part Number | 2-721-ST |
| Brand | Competition Clutch |
| Product Type | Drivetrain |
| Drivetrain | Clutches and Flywheels |












