GSC High Pressure Conical Valve Spring Kit w/ Titanium Retainers Toyota 2JZ & 1JZ GSC5066
Race-Grade Conical Spring Kit for 2JZ & 1JZ Engines
The GSC Power-Division High Pressure Conical Valve Spring Kit is built for serious race applications on Toyota 2JZ and 1JZ platforms. This complete kit includes 24 conical valve springs and 24 titanium retainers, engineered to handle extreme RPM, aggressive cam profiles, and high boost levels.
Performance Specs
- 2JZ Install Height: 1.316" | Seat Pressure: 105 lbs | Open Pressure: 253 lbs @ 0.869"
- 1JZ Install Height: 1.278" | Seat Pressure: 117 lbs | Open Pressure: 250 lbs @ 0.873"
- Coil Bind: 0.818"
- Max Valve Lift: 2JZ: 0.447" | 1JZ: 0.405"
- Max RPM: 10,000 RPM
- Max Boost: 60 psi
Why Conical Springs?
Conical springs outperform traditional cylindrical and beehive designs by naturally dampening valvetrain harmonics. Their tapered coil geometry helps absorb shock and reduce stress, extending component life and improving stability at high RPM.
Built for Extreme Conditions
Each spring undergoes a multi-stage heat treatment and super-finishing process to maximize durability and performance. Whether you're chasing higher RPMs or running aggressive cam profiles, this kit is built to keep up with the demands of modern turbocharged engines.
Fitment:
- 1993–1998 Toyota Supra Turbo 3.0L DOHC Inline-6 (2JZ-GTE)
- 1991–2000 Toyota Aristo 3.0L Twin Turbo Inline-6 (2JZ-GTE, Japan only)
- 1990–2001 Toyota Chaser / Mark II / Cresta 2.5L Turbo Inline-6 (1JZ-GTE)
- 1992–2000 Toyota Soarer 2.5L Turbo Inline-6 (1JZ-GTE)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
