GSC Power-Division 5041 Beehive Valve Spring Kit w/Ti Retainers for 4G63 DSM/Evo

Vehicle Fitment

• 1990-1999 Mitsubishi Eclipse GST/GSX/GS (4G63)
• 1990-1998 Plymouth Laser RS (4G63)
• 1990-1999 Eagle Talon TSi (4G63)
• 1992-2006 Mitsubishi Lancer Evolution I-IX (4G63)
• 1991-1992 Mitsubishi Galant VR-4 (4G63)

Features

• High-performance beehive valve spring design for improved valvetrain control
• Grade 5 titanium retainers reduce valvetrain mass and inertia
• Ovate wire construction with advanced heat treatment for durability
• Superior load retention and fatigue resistance over stock springs
• Stable valve control up to extreme RPMs
• Supports aggressive cam profiles up to ~12.1 mm lift
• Enables higher rev limits and boost capacity for performance builds
• Direct upgrade on 4G63 DOHC cylinder heads

Specifications

• Part Number: 5041
• Spring Type: Beehive valve springs with titanium retainers
• Install Height (approx): 1.54" Intake / 1.52" Exhaust
• Seat Pressure (approx): 97 lbs Intake / 107 lbs Exhaust
• Open Pressure (approx): 250-256 lbs @ ~1.078" lift
• Coil Bind: ~0.620"
• Max RPM Capability: ~10,500 RPM
• Max Boost Support: ~44 psi
• Max Compatible Lift: ~12.1 mm cam lift

Included Components

• 16x Beehive valve springs
• 16x Grade 5 titanium retainers

Product Description

The GSC Power-Division 5041 Beehive Valve Spring Kit with titanium retainers is a premium valvetrain upgrade engineered for Mitsubishi 4G63 engines found in DSM and Evolution platforms. Featuring high-pressure beehive springs and lightweight titanium retainers, this kit enhances valve control at high engine speeds and aggressive camshaft profiles. The advanced ovate wire and heat treatment process deliver excellent load retention and fatigue resistance, making these springs ideal for high-revving race or boosted street builds.

Capable of handling approximately 10,500 RPM and supporting cam lifts up to ~12.1 mm with boost pressures up to ~44 psi, the 5041 springs improve stability and reduce valve float under demanding conditions. This kit is a direct fit for 4G63 DOHC cylinder heads and includes 16 springs and 16 titanium retainers for complete upgrade coverage. Whether you're building a high-power Evo or DSM, these springs provide the valvetrain reliability needed for performance applications.