Clutch Masters FX350 Clutch Kit for 2004 – 2021 Subaru WRX STI
Even with basic bolt on mods the EJ25 motor in your STI will be getting close to 300HP or even more with some of the newer models of STI’s. At this power level the stock clutch becomes incapable of supporting the upgrades and more aggressive driving from track days. The FX350 clutch kit for the STI offer a 110% increase in holding capacity over factory clutch and is a must have to put the power to the ground for any track ready STI.
The FX350 System uses the Power Plus I, Hi-Leverage, High Rev Pressure Plate utilizing Clutch Masters Fiber-Tough friction material sprung disk. While the FX350 has slightly increased holding capacity compared to the FX300, the most prominent difference between the two is the slightly more aggressive engagement and increased longevity due to the Fiber-Tough material on the clutch disk. This clutch is engineered for street driven vehicles and is specifically designed for extended wear and additional clamping force for the enthusiast who has modifications such as an exhaust and or intake system, up to 100hp NO2, upgraded turbo kit, and one of our infamous Brewed tunes. It features only slightly increased pedal pressure over factory, longer life than stock, and normal clutch feel during engagement and disengagement for a very smooth operation.
FX350 clutch kit includes:
- Heavy-Duty Segmented Fiber-Tough Disc
- Heavy-Duty Sprung Hub
- OEM or better Release Bearing
- Pilot Bearing
- Alignment Tool
- Instruction Card
**The difference between the High Rev pressure plate and the Heavy Duty pressure plate of 15017-HDFF is the High Rev kits have an even stronger and reinforced pressure plate to withstand higher RPM’s for your built EJ25’s.**