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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Clutch Masters
Clutch Masters Steel Flywheel for 2004-2021 Subaru WRX STI and Legacy GT spec.B 6-Speed (2.5L) FW-721-SF
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
Fits 2004-2021 Subaru WRX STI and 2006-2009 Legacy GT spec.B (2.5L) equipped with 6-speed manual transmissions.
This Clutch Masters steel flywheel is engineered to replace the heavy factory unit, offering a significant reduction in rotational mass to improve throttle response and reduce turbo lag. Designed and manufactured in the USA, each flywheel is CAD-engineered and precision Haas CNC-machined from a 1045 steel billet core. This construction provides the durability required for high-performance street and track use while maintaining excellent heat dissipation characteristics.
To ensure smooth operation and engine longevity, every flywheel is zero-balanced to eliminate vibration. The steel core is finished with a black oxide coating for superior rust prevention. This component is SFI 1.2 Certified, meeting strict safety standards for competitive motorsports. It is designed to pair seamlessly with Clutch Masters FX100 through FX500 single disc kits or their twin-disc clutch options.
- CNC-machined from 1045 billet steel for maximum strength
- Zero-balanced to ensure 100% true rotation
- Black oxide coated for long-term corrosion resistance
- SFI 1.2 Certified for motorsport safety compliance
- Reduces rotational inertia for quicker engine revs and reduced turbo lag
- Manufacturer Part Number: FW-721-SF
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2014 | Subaru | Impreza | WRX STI |
| 2007,2011-2014 | Subaru | Impreza | WRX STI Limited |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
| 2006-2009 | Subaru | Legacy | GT spec.B |
| 2015-2021 | Subaru | WRX STI | Base |
| 2015 | Subaru | WRX STI | Launch Edition |
| 2015-2021 | Subaru | WRX STI | Limited |
| 2019 | Subaru | WRX STI | S209 |
| 2016 | Subaru | WRX STI | Series.HyperBlue |
| 2018 | Subaru | WRX STI | Type RA |
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Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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Clutch Masters Steel Flywheel for 2004-2021 Subaru WRX STI and Legacy GT spec.B 6-Speed (2.5L) FW-721-SF
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
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Fits 2004-2021 Subaru WRX STI and 2006-2009 Legacy GT spec.B (2.5L) equipped with 6-speed manual transmissions.
This Clutch Masters steel flywheel is engineered to replace the heavy factory unit, offering a significant reduction in rotational mass to improve throttle response and reduce turbo lag. Designed and manufactured in the USA, each flywheel is CAD-engineered and precision Haas CNC-machined from a 1045 steel billet core. This construction provides the durability required for high-performance street and track use while maintaining excellent heat dissipation characteristics.
To ensure smooth operation and engine longevity, every flywheel is zero-balanced to eliminate vibration. The steel core is finished with a black oxide coating for superior rust prevention. This component is SFI 1.2 Certified, meeting strict safety standards for competitive motorsports. It is designed to pair seamlessly with Clutch Masters FX100 through FX500 single disc kits or their twin-disc clutch options.
- CNC-machined from 1045 billet steel for maximum strength
- Zero-balanced to ensure 100% true rotation
- Black oxide coated for long-term corrosion resistance
- SFI 1.2 Certified for motorsport safety compliance
- Reduces rotational inertia for quicker engine revs and reduced turbo lag
- Manufacturer Part Number: FW-721-SF
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2014 | Subaru | Impreza | WRX STI |
| 2007,2011-2014 | Subaru | Impreza | WRX STI Limited |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
| 2006-2009 | Subaru | Legacy | GT spec.B |
| 2015-2021 | Subaru | WRX STI | Base |
| 2015 | Subaru | WRX STI | Launch Edition |
| 2015-2021 | Subaru | WRX STI | Limited |
| 2019 | Subaru | WRX STI | S209 |
| 2016 | Subaru | WRX STI | Series.HyperBlue |
| 2018 | Subaru | WRX STI | Type RA |
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