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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
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