GSC Standard Exhaust Valve – FA20F WRX (GSC2281-01)
High-Performance Exhaust Valve for 2015+ Subaru WRX FA20F
Built for the 2015+ Subaru WRX FA20F, the GSC Power-Division Standard Exhaust Valve delivers exceptional flow, heat resistance, and long-term reliability. This single valve features a 29mm head and precision-machined stem geometry, ideal for turbocharged applications and aggressive cam profiles.
Technical Specifications
- Part Number: GSC2281-01
- Head Diameter: 29.00mm (1.142")
- Stem Diameter: 5.5mm (0.215")
- Overall Length: 97.90mm (3.854")
Engineered for Flow, Strength, and Longevity
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 head improves exhaust flow and valve aerodynamics
- Backcut profile reduces weight and supports higher RPM operation
- Micro-polished stem minimizes oil drag and enhances guide movement
- Made 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+ Subaru WRX FA20F engines. Please confirm fitment before ordering.
- (reuse not recommended for performance builds)
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
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
