GSC Beehive Valve Spring Kit – Single Spring for Mitsubishi Evo 8/9 (GSC5039)
Optimized for Evo 8/9 Cylinder Head Performance
The GSC Power Division beehive valve spring is engineered specifically for Mitsubishi Evo 8/9 applications. Featuring advanced ovate wire construction and precision heat treatment, this spring delivers exceptional load retention and fatigue resistance—making it a smart upgrade over factory components.
Spring Pressure Specs
- Intake: 85 lbs @ 1.539" install height
- Exhaust: 92 lbs @ 1.519" install height
- Intake Open Pressure: 223 lbs @ 1.106"
- Exhaust Open Pressure: 237 lbs @ 1.117"
- Maximum Valve Lift: 0.539"
- Coil Bind: 0.920"
Performance Limits
- Max RPM: 8200
- Max Boost: 25 psi
Product Details
- Part Number: GSC5039
- Fitment: Mitsubishi Evo 8/9 only
- Quantity: Sold individually (full kits include 16 springs)
- Compatibility: Works with OEM seat and retainer
Note:
This spring is designed for Evo 8/9 only. For Evo 1–7 and DSM platforms, refer to GSC5040, which includes springs and titanium retainers.
Fitment:
- 2003 - 2005 Mitsubishi Lancer Evolution VIII 2.0L Turbo (4G63T)
- 2006 - 2007 Mitsubishi Lancer Evolution IX 2.0L Turbo (4G63T)
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