GSC Standard Exhaust Valve Set – FA20F WRX (GSC2281-8)
High-Performance Exhaust Valves for 2015–2024 Subaru WRX FA20F
Designed for the 2015+ Subaru WRX FA20F, the GSC Power-Division Standard Exhaust Valve Set delivers exceptional flow, thermal stability, and long-term reliability. This set of 8 valves features a 29mm head and precision-machined stem geometry, ideal for turbocharged builds and aggressive cam profiles.
Technical Specifications
- Part Number: GSC2281-8
- Head Diameter: 29.00mm (1.142")
- Stem Diameter: 5.5mm (0.215")
- Overall Length: 97.90mm (3.854")
Engineered for Flow, Strength, and Consistency
Using advanced 3D modeling and simulation software, GSC developed a high-flow valve head with reduced face distortion for better sealing under extreme conditions. Each prototype is tested in its intended application to ensure maximum performance and consistent results throughout the valve’s lifespan.
Key Features:
- Swirl-polished heads enhance exhaust flow and valve aerodynamics
- Backcut design reduces weight for improved RPM capability
- Micro-polished stems minimize oil drag and improve guide movement
- Crafted from modified 23-8n stainless steel for heat resistance and durability
- Stellite-tipped or hardened valve ends for extended wear protection
- Optimized tip height for better geometry and faster lash setup
- Balanced keeper groove to reduce spring shims and maximize kit performance
- Compatible with OEM or upgraded keepers/locks (reuse not recommended for performance builds)
Fitment Note
Application: Designed specifically for 2015–2024 Subaru WRX FA20F engines. Please confirm fitment before ordering.
Fitment:
- 2015 Subaru WRX FA20F
- 2016 Subaru WRX FA20F
- 2017 Subaru WRX FA20F
- 2018 Subaru WRX FA20F
- 2019 Subaru WRX FA20F
- 2020 Subaru WRX FA20F
- 2021 Subaru WRX FA20F
- 2022 Subaru WRX FA20F
- 2023 Subaru WRX FA20F
- 2024 Subaru WRX FA20F
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