GSC Power Division 5086 Extreme Valve Spring Kit for 93-98 Toyota Supra 2JZ-GTE

Vehicle Fitment

• 1993-1998 Toyota Supra (JZA80, 2JZ-GTE, RWD)

Fitment Notes

• Designed exclusively for Toyota 2JZ-GTE DOHC twin-turbo engines
• Intended for fully built or high-boost race engine applications
• Requires upgraded camshafts and valvetrain supporting components
• Professional cylinder head machining and installation required

Features

• Extreme pressure conical spring design for maximum valve control
• Rated for high-RPM operation up to approximately 10,000 RPM
• Supports extreme boost levels exceeding 80 psi in race builds
• Titanium retainers reduce valvetrain mass and improve stability
• High seat pressure improves valve sealing under extreme load
• Precision-engineered for Toyota 2JZ-GTE cylinder heads
• Improved resistance to valve float at high lift cam profiles
• Complete matched kit for balanced valvetrain performance

Specifications

• Part Number: 5086
• Brand: GSC Power Division
• Type: Extreme Pressure Conical Valve Spring Kit
• Engine Platform: Toyota 2JZ-GTE
• Vehicle Platform: Toyota Supra MK4 (JZA80)
• Configuration: Inline-6 DOHC Twin Turbo
• Seat Pressure: ~150 lbs
• Open Pressure: ~300 lbs @ 11.5mm lift
• Max Valve Lift: ~0.453 in
• Max RPM: Up to 10,000 RPM
• Max Boost Capability: 80+ psi (built engines)

Included Components

• 24x Extreme Pressure Conical Valve Springs
• 24x Titanium Valve Spring Retainers
• 24x Valve Spring Seats

Product Description

The GSC Power Division 5086 valve spring kit is engineered for extreme-performance Toyota 2JZ-GTE engines found in the 1993-1998 Supra platform. Designed specifically for high-boost and high-RPM racing environments, this kit provides the valvetrain stability required for heavily modified turbocharged builds.

Featuring conical spring design with titanium retainers and reinforced seats, the system drastically reduces valve float while improving durability under extreme cylinder pressures. It is optimized for aggressive camshaft profiles and sustained operation in motorsport-level conditions.

This kit is intended exclusively for serious performance or competition engines, where stock valvetrain components are insufficient. Professional installation and full engine build support components are strongly recommended for safe and optimal operation.