GSC2022-01 Standard Intake Valve – Mitsubishi Evo X 4B11T
GSC Power-Division’s standard-size intake valve for the 4B11T engine features a 35mm head diameter, 5.5mm stem, and 113.15mm overall length. Engineered for high-performance durability, this valve is part of GSC’s advanced valvetrain lineup designed to deliver maximum flow and longevity under extreme conditions.
Using cutting-edge 3D modeling and simulation, GSC developed a high-flow valve head with reduced face distortion—ensuring better sealing and consistent performance throughout the valve’s life cycle. These valves are built to meet the demands of high-RPM, high-boost applications and are compatible with OEM or upgraded keepers.
Key Features:
- Swirl-polished head improves airflow efficiency
- Back-cut design reduces weight for better RPM response and aggressive cam profiles
- Micro-polished stem minimizes oil retention and drag for smoother movement
- Made from modified 21-4N stainless for heat resistance and long-term reliability
- Valve tips are hardened or fused with stelite wafer for extended wear life
- Optimized tip height reduces valve tipping and simplifies lash adjustment
- Keeper groove tuned to balance spring pressures and reduce shim use
- Works with OEM or GSC upgraded keepers—reusing old locks not recommended for performance builds
Fitment:
- 2008–2015 Mitsubishi Lancer Evolution X GSR
- 2008–2015 Mitsubishi Lancer Evolution X MR
- 2008–2015 Mitsubishi Lancer Evolution X Final Edition
- 2008–2015 Mitsubishi Lancer Evolution X SE (Special Edition)
- 2008–2015 Mitsubishi Lancer Evolution X FQ Series (UK models)
- 2008–2015 Mitsubishi Galant Fortis Ralliart (JDM only)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
