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SKU: 8042 | UPC: GSC8042
GSC P-D Mitsubishi Evo 4-9 4G63 Race Balance Shaft
This GSC P-D Race Balance Shaft replaces the factory primary drive unit in 4G63 engines powering Mitsubishi Lancer Evolution 4-9 DSM Eclipse Talon and Galant VR-4 models. Machined from billet 4340 steel it weighs only 1.6 lbs compared to OEM 4 lbs delivering faster engine response higher rev limits and less rotational mass. Perfect for drag road race and time attack builds needing smoother operation at peak RPMs.
Key Features
- Billet 4340 Steel Construction: Delivers maximum strength and fatigue resistance for extreme race conditions in high horsepower 4G63 setups.
- 60% Weight Reduction: Cuts mass from OEM 4 lbs to 1.6 lbs accelerating revving reducing parasitic drag and improving throttle response.
- Reduced Bearing Surface: 0.866 inch diameter versus OEM 1.100 inch minimizes oil drag enabling freer spinning at high RPMs.
- Direct OEM Replacement: Bolts directly into factory housing using stock gears and mounting points with zero modifications required.
- Race-Specific Design: Built for 4G63 engines in Evo 4-9 and DSM platforms pushing drag road course and time attack limits.
Product Notes
- For race or track use only not intended for street or daily driving.
- Retains compatibility with stock balance shaft gears and delete kits.
- Ships securely packaged to prevent damage during transit.
Installation Notes
- Professional installation recommended.
- Remove factory balance shafts and gears before installing GSC unit.
- Uses OEM mounting hardware and torque specs from service manual.
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 |
| 2003-2005 | Mitsubishi | Lancer Evolution | VIII MR RS |
| 2005-2006 | Mitsubishi | Lancer Evolution | IX MR RS SE |
| 1990-1994 | Plymouth | Laser | RS |
Why Choose GSC?
- Backed by years of real-world racing data from top DSM and Evo teams.
- Machined to exacting tolerances for perfect balance and longevity.
- Developed by engineers focused on 4G63 performance valvetrain and rotating parts.
Frequently Asked Questions
-
Q: Does this fit all 4G63 engines in Evo 4-9 and DSM cars?
A: Yes it directly replaces the factory shaft in listed Eclipse Talon Galant VR-4 and Lancer Evolution models with 4G63 equipped with balance shafts. -
Q: What material is the shaft made from?
A: Precision CNC machined from high strength 4340 billet steel for superior fatigue resistance. -
Q: Is professional installation required?
A: Recommended due to engine disassembly torque specs and alignment needs for optimal performance.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective foam lined box 12x6x4 inches
- Weight: 2.2 lbs shipped (1.6 lbs product)
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...
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