GSC Power-Division Super Alloy Exhaust Valve – Mitsubishi EVO X 4B11T – GSC2025-01
Built for high-output EVO X 4B11T engines, the GSC2025-01 Super Alloy exhaust valve is designed to withstand extreme EGTs—up to 2000°F—without compromising durability or flow. This standard-size valve features a 29mm head diameter, 5.5mm stem, and 105.85mm overall length.
Each valve is engineered for strength and longevity, with chrome-polished stems that reduce friction and improve lubricity—especially when paired with GSC’s manganese bronze guides. The under-head dish is optimized for weight reduction, while swirl-polished and backcut heads enhance airflow and maintain reliability under high boost and RPM.
Key Specs:
- Head Diameter: 29.00mm
- Stem Diameter: 5.5mm
- Overall Length: 105.85mm
- Material: Super Alloy for extreme heat resistance
- Finish: Chrome-polished stem for smoother motion
- Design: Swirl-polished and backcut for improved flow
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)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
