High-Flow 33mm Exhaust Valves for Subaru EJ Engines

Take your Subaru EJ205, EJ207, or EJ257 engine to the next level with the GSC Power Division 33mm (+1mm) oversized exhaust valve. Designed for performance builds that require increased exhaust flow, these valves allow your engine to expel spent gases more efficiently, reducing backpressure and allowing for higher power output. The chrome-polished surface is specifically engineered to handle the extreme temperatures of high-boost applications.

Key Performance Features:

• Oversized Design: 33mm head diameter (+1mm over stock) for improved exhaust scavenging.
• Material: Advanced alloy construction for maximum heat resistance and durability.
• Finish: Chrome-polished to reduce friction and prevent carbon buildup in the exhaust port.
• Compatibility: Fits a wide range of Subaru Impreza, WRX, and STI models.
• Performance Benefit: Ideal for ported heads and high-horsepower turbo setups.

Upgrading to an oversized exhaust valve is a proven method for increasing the volumetric efficiency of your engine. These GSC valves provide the structural integrity needed to support aggressive tuning while ensuring your engine runs cooler and more efficiently. Whether you are building a street monster or a track-focused machine, these valves are an essential upgrade for any serious Subaru enthusiast. Find all your performance engine parts at GGCRACING.