SKU: 2001-8 | UPC: GSC2001-8
GSC P-D 4G63T Evo 1-9 / 90-98 DSM Chrome Polished Exhaust Valve – 30.5mm Head (STD) – SET 8
GSC Power-Division P-D series exhaust valves fit 4G63T engines in Mitsubishi Lancer Evolution 1-9 and 1990-1998 DSM vehicles including Eclipse GST GSX Talon TSi Galant VR-4. This set of 8 chrome polished valves drops in with 30.5mm standard head diameter to handle high boost while boosting exhaust flow and cutting guide wear. Perfect for turbo rebuilds demanding reliable power in 4G63T setups.
Key Features
- One-Piece Forged Construction: Handles extreme heat and RPM without flexing for consistent operation
- Chrome Polished Stems: Cuts friction against guides to extend valve train life during long sessions
- Swirl Polished Heads: Promotes smoother exhaust evacuation and resists carbon deposits
- Exact Specifications: 30.5mm head diameter 6.98mm stem diameter 108.51mm overall length 8mm seat width 0.5mm x 45°. margin
- Heat Treated Alloy: Resists fatigue in turbocharged 4G63T applications for repeated high power runs
Product Notes
- Full set of 8 exhaust valves for complete cylinder head refresh
- Apply assembly lube to stems prior to installation for smooth break-in
- Shipped in protective foam-lined box to arrive undamaged
Installation Notes
- Professional installation recommended.
- Machine valve seats to 30.5mm head with 0.5mm margin for proper sealing
- Works with OEM retainers seals and aftermarket dual springs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1998 | Eagle | Talon | TSi |
| 1990-1994 | Mitsubishi | Eclipse | GS |
| 1990-1999 | Mitsubishi | Eclipse | GST |
| 1990-1999 | Mitsubishi | Eclipse | GSX |
| 1996-1999 | Mitsubishi | Eclipse | Spyder GST |
| 1991-1992 | Mitsubishi | Galant | VR-4 |
| 2005-2006 | Mitsubishi | Lancer | Evolution |
| 2005-2006 | Mitsubishi | Lancer Evolution | MR |
| 2005-2006 | Mitsubishi | Lancer Evolution | RS |
| 2006 | Mitsubishi | Lancer Evolution | SE |
| 1990-1994 | Plymouth | Laser | RS |
Why Choose GSC Power-Division?
- Used by drag teams in 4G63T record-setting builds
- Built in USA with incoming and outgoing inspections
- Engineered from racer feedback for real-world durability
Frequently Asked Questions
- Q: Do these fit 2003-2006 US Evo 8/9 models?
A: Yes covers Evo 1-9 4G63T including 2005-2006 Lancer Evolution MR RS SE - Q: What material and finish details?
A: Heat treated one-piece forged steel swirl polished heads chrome polished stems for flow and wear resistance - Q: What warranty coverage?
A: Lifetime warranty against manufacturing defects when installed by certified shop
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Foam protected OEM box 12 x 8 x 2 inches
- Weight: 1.95 lbs
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