GSC Conical Valve Spring Kit w/ Titanium Retainers – Toyota 2JZ & 1JZ – GSC5064
High-Performance Conical Spring Kit for 2JZ & 1JZ Engines
The GSC Power-Division Conical Valve Spring Kit is designed for Toyota 2JZ and 1JZ cylinder heads and includes 24 conical valve springs and 24 titanium retainers</strong. Engineered for high-RPM and high-boost applications, this kit delivers exceptional valvetrain control and durability.
Performance Specs
- 2JZ Install Height: 1.316" | Seat Pressure: 84 lbs | Open Pressure: 221 lbs @ 0.903"
- 1JZ Install Height: 1.278" | Seat Pressure: 97 lbs | Open Pressure: 223 lbs @ 0.896"
- Coil Bind: 0.807"
- Max Valve Lift: 2JZ: 0.453" | 1JZ: 0.415"
- Max RPM: 10,000 RPM
- Max Boost: 50 psi
Why Choose 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.
Part Number
- 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)
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