-14%
Click to zoom in
SKU: 2007-01 | UPC: GSC2007-01
GSC P-D 1992-2006 Mitsubishi 4G63T Lancer Evolution 1-9 Polished Super Alloy Exhaust Valve - 31.5mm Head (+1mm) - Single
This GSC Power-Division exhaust valve fits all Mitsubishi Lancer Evolution 1-9 models equipped with the 4G63T engine. Made from polished super alloy with a 31.5mm head diameter 1mm over stock size it increases exhaust flow for better scavenging and power. The one-piece forged construction handles temperatures over 1600°F with reliability at sustained high RPM.
Key Features
- Polished Super Alloy Construction: Resists exhaust gas temperatures over 1600°F while maintaining structural integrity
- 31.5mm Head Diameter (+1mm): Provides greater exhaust port volume for improved scavenging and power output
- 7.00mm Stem Diameter: Matches OEM guides with reduced friction from mirror polish finish
- 113.95mm Overall Length: Direct replacement geometry for seamless integration
- One-Piece Forged Design: Eliminates weld failures and delivers consistent valve train stability
Product Notes
- Sold as single valve order multiples for full sets
- Pair with GSC valve springs for optimal control
- Packaged in protective sleeve to prevent damage
Installation Notes
- Professional installation recommended.
- Requires valve seat machining for +1mm oversize head
- Compatible with stock heads and aftermarket seats
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1992-1993 | Mitsubishi | Lancer Evolution | Evo I |
| 1994 | Mitsubishi | Lancer Evolution | Evo II |
| 1995 | Mitsubishi | Lancer Evolution | Evo III |
| 1996-1997 | Mitsubishi | Lancer Evolution | Evo IV |
| 1998 | Mitsubishi | Lancer Evolution | Evo V |
| 1999-2001 | Mitsubishi | Lancer Evolution | Evo VI, VI TME |
| 2001-2002 | Mitsubishi | Lancer Evolution | Evo VII, VII GT-A |
| 2003-2005 | Mitsubishi | Lancer Evolution | Evo VIII, VIII MR FQ |
| 2005-2006 | Mitsubishi | Lancer Evolution | Evo IX, IX MR, IX MR FQ |
| 2003-2005 | Mitsubishi | Lancer Evolution | VIII MR USDM |
| 2006 | Mitsubishi | Lancer Evolution | IX MR USDM |
Why Choose GSC?
- Proven in World Cup, drag racing and time attack builds
- Manufactured with aerospace-grade materials and CNC machining
- Backed by lifetime warranty on manufacturing defects
Frequently Asked Questions
-
Q: Will this valve fit USDM Evo 8 and 9 models?
A: Yes it directly fits all 4G63T-equipped Evo 1 through 9 including USDM Evo VIII 2003-2005 and Evo IX 2006 -
Q: What super alloy material is used?
A: Inconel X-750 alloy offers high nickel content for fatigue resistance and thermal stability up to 1600°F -
Q: Can this be installed without a full valve job?
A: Oversize head requires seat and guide machining professional service advised for proper clearance
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective sleeve in 6 x 4 x 1 inch box
- Weight: 0.2 lbs
GSC Power Division
GSC Power Division camshafts and valvetrain parts for turbocharged import engines are stocked at Black Ops Auto Works. Shop camshafts, valve springs, retainers, valves, and head studs engineered for the Toyota 2JZ, Nissan RB26 and VR38DETT, Mitsubishi 4G63, Subaru EJ257 and FA20, and Honda K20 platforms. Every product is filterable by engine code, cam grind, and application so the correct part ships the first time. Black Ops Auto Works carries 407 GSC Power Division SKUs across camshaft, valvetrain, and engine internal categories. What This Brand Covers GSC Power Division is a specialist engine internals brand focused on camshafts, valve springs, retainers, and valves engineered specifically for high output turbocharged import engines. The catalog is built around specific engine codes rather than complete vehicles, which means the same part often applies across multiple chassis that share an engine platform. Brand Focus GSC Power Division designs valvetrain components for engine...
View GSC Power Division Products
Valves
Engine valves for import, domestic, and European performance builds are stocked at Black Ops Auto Works. Shop intake valves, exhaust valves, single-groove and triple-groove valves, Inconel and titanium valves, and complete valve sets for 2JZ, RB26, RB25, VR38DETT, K-series, EA888, EA113, FA20, S58, B58, and HEMI 5.4L and 5.7L applications. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 577 valve SKUs across intake, exhaust, and material specification categories. What This Category Covers The Valves category covers replacement and upgraded intake and exhaust valves for naturally aspirated, turbocharged, and supercharged cylinder heads. Coverage spans budget-focused OE-spec valves through race-grade Inconel and titanium valves built for sustained high RPM and boosted horsepower. Categories Included Intake valves, exhaust valves, single valves sold individually, and full valve set...
View Valves Products
Valves & Components
Valves and valvetrain components for import, domestic, and performance engine platforms are stocked at Black Ops Auto Works. Shop intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, and lash caps for Toyota 2JZ and Supra, Honda K-Series, Nissan RB and SR20, BMW B58 and S58, Subaru FA20, Ford Coyote, and GM LS platforms. Every part is filterable by year, make, model, and engine so builders and tuners can confirm fitment before ordering. Black Ops Auto Works carries 1,391 valvetrain SKUs from proven performance brands. What This Category Covers Valves and valvetrain components manage airflow into and out of the combustion chamber and keep the valvetrain sealed and stable at high RPM. This collection spans intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, lash caps, and cam follower shims. Why the Valvetrain Matters for Pe...
View Valves & Components Products