GSC Power-Division +1mm Super Alloy Exhaust Valve – Mitsubishi EVO X 4B11T – GSC2027-01
Built for high-horsepower EVO X 4B11T applications, the GSC2027-01 Super Alloy exhaust valve features a +1mm oversized head (30mm) and is engineered to perform under extreme exhaust gas temperatures—up to 2000°F. With a stem diameter of 5.5mm and an overall length of 105.85mm, it’s designed for durability and flow in demanding setups.
Each valve includes a chrome-polished stem for enhanced lubricity and reduced friction, especially when paired with GSC’s manganese bronze valve guides. The under-head dish is optimized for weight reduction, while swirl-polished and backcut heads improve airflow without compromising strength.
Specs:
- Head Diameter: 30.00mm
- Stem Diameter: 5.5mm
- Overall Length: 105.85mm
- Material: Super Alloy for extreme heat resistance
- Finish: Chrome-polished stem for smoother operation
- Design: Swirl-polished and backcut for improved flow and longevity
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
