GSC P-D 21-4N Stainless Intake Valve 34mm Head STD SET 8 Subaru WRX 2015-2021 | 2282-8

Product Fitment: 

2015-2021 Subaru WRX

Upgrade the valvetrain of your 2015-2021 Subaru WRX (FA20F engine) with the GSC Power-Division STD Intake Valve. Engineered from premium 21-4N stainless steel and rigorously flow-tested, this valve replaces the factory unit with a performance-oriented design that improves flow, reduces distortion, and supports higher-RPM or boosted setups.

Key Features:

• 34 mm head diameter — standard size for exact fitment.

• Swirl-polished valve head for smoother airflow and better volumetric efficiency.

• Back-cut design reduces valve mass, allowing quicker valve response and supporting higher rpm potential.

• Micro-polished stem minimizes oil retention and drag in the valve guide for smoother motion and longer life.

• Hardened or fused tip construction ensures durability under high loads and minimizes wear.

• Balanced keeper groove geometry and precision tip length help maintain optimal valvetrain geometry and simplify lash adjustment.
  

Whether you’re restoring your engine after high mileage, building for higher boost or rpm, or simply want the peace-of-mind of upgraded valvetrain components — the GSC STD Intake Valve offers improved durability and performance over stock. Engineered specifically for the Subaru FA20F platform, it ensures compatibility and long-term reliability in demanding applications.