GSC Exhaust Valves 32mm Standard - Set of 8 (Subaru EJ20 / EJ257 Turbo) GSC2011-8

GSC Power-Division Exhaust Valve Set, 32mm (Subaru EJ20 / EJ257 Turbo) - GSC2011-8

When undertaking a complete engine build or valvetrain refresh on your Subaru EJ series turbo engine, the GSC Power-Division Exhaust Valve Set provides the ultimate foundation. Engineered from the ground up to be the strongest and highest-flowing valves available, this complete set of eight valves utilizes advanced 3D design and simulation software for an optimized head shape. Each valve is meticulously flow-tested for its specific application, ensuring your engine benefits from the best airflow on the market. The premium materials used in these valves result in significantly less valve face distortion compared to standard designs, which guarantees a superior seal and more consistent, reliable performance throughout the life of your engine.

Key Performance Features

• Complete Set of 8: This kit includes eight exhaust valves, providing everything you need for a full valvetrain upgrade or cylinder head rebuild.
• Swirl Polished Heads: Precision polishing enhances airflow and maximizes efficiency.
• Back-Cut Design: Reduces valve weight, a critical factor for high-RPM and high-boost applications. This design also allows for more aggressive camshaft profiles without requiring increased valve spring seat pressures.
• Micro-Polished Stems: The valve stems feature a micro-polished finish to reduce oil retention, minimizing friction and creating smoother valve motion for increased longevity.
• Advanced 23-8N Stainless Material: Constructed from a modified stainless alloy, these exhaust valves offer exceptional resistance to extreme heat while maintaining long-term durability.
• Hardened Tips: Tips are hardened or feature a stellite wafer for maximum resistance to wear from the rocker or tappet, extending valvetrain life.

Installation & Fitment

Designed as a direct fit for Subaru EJ20 and EJ257 turbo engines, this valve set is fine-tuned to ensure proper valvetrain geometry and reduce installation time. GSC has adjusted the keeper groove to balance spring pressures, maximizing performance when used with their spring and retainer kits and reducing the need for valve spring shims. These valves are compatible with both OEM and upgraded keepers/locks. For any performance application, it's highly recommended to use new valve locks to avoid issues with material grooving.