GSC Beehive Valve Spring Kit w/ Titanium Retainers – Mitsubishi 4G63 (GSC5041)
Built for Extreme RPM and Boost Demands
The GSC Power Division beehive valve spring kit with titanium retainers (PN GSC5041) is engineered for all Mitsubishi 4G63 platforms. Designed to handle up to 10,500 RPM and 44 psi boost, this kit includes 16 beehive springs and 16 lightweight titanium retainers—perfect for high-lift cam setups and aggressive builds.
Spring Pressure & Lift Specs
- Intake Seat Pressure: 100 lbs @ 1.539"
- Exhaust Seat Pressure: 107 lbs @ 1.519"
- Intake Open Pressure: 250 lbs @ 1.078"
- Exhaust Open Pressure: 256 lbs @ 1.058"
- Maximum Valve Lift: 0.476"
- Coil Bind: 1.004"
Performance Limits
- Max RPM: 10,500
- Max Boost: 44 psi
- Cam Compatibility: Up to 12.1mm lift (net lift limited by seal-to-retainer clearance)
Product Details
- Part Number: GSC5041
- Fitment: All Mitsubishi 4G63 engines (Evo 1–9, DSM)
- Includes: 16 beehive valve springs + 16 titanium retainers
Why Choose GSC5041?
If you're battling valve float or rocker arm issues at high RPM, this spring set is your solution. GSC’s beehive design uses advanced heat-treated ovate wire for superior load retention and fatigue resistance. The compact titanium retainer reduces mass, allowing for tighter valve control and higher rev limits—ideal for serious street or race builds.
Fitment:
- 1995 - 1999 Mitsubishi Eclipse GS-T/GSX 2.0L Turbo (4G63T)
- 1990 - 1994 Mitsubishi Eclipse 2.0L Turbo (4G63T)
- 1991 - 1992 Mitsubishi Galant VR-4 2.0L Turbo (4G63T)
- 1992 - 1996 Mitsubishi Lancer Evolution I–III 2.0L Turbo (4G63T)
- 1996 - 2003 Mitsubishi Lancer Evolution IV–VII 2.0L Turbo (4G63T)
- 2003 - 2007 Mitsubishi Lancer Evolution VIII–IX 2.0L Turbo (4G63T)
- 1990 - 1998 Eagle Talon TSi 2.0L Turbo (4G63T)
- 1990 - 1994 Plymouth Laser RS Turbo 2.0L Turbo (4G63T)
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