GSC Power Division Single Conical Valve Spring Kit – Nissan RB26DETT (GSC5075)
Precision Valvetrain Upgrade for Shim-Under RB26DETT Builds
The GSC Power Division Single Conical Valve Spring Kit is engineered for high-performance RB26DETT applications using shim-under bucket setups. Designed to handle elevated RPM and boost, this kit includes:
- 24 conical valve springs
- 24 titanium retainers
- 24 chromoly valve spring seats
Technical Specifications
- Install Height: 1.285"
- Seat Pressure: 95 lbs
- Open Pressure @ 11.0mm Lift: 238 lbs @ 0.852"
- Coil Bind: 0.807"
- Max Valve Lift: 0.433"
- Max RPM: 10,000
- Max Boost: 45 psi
Why Conical Springs Excel
Conical valve springs are proven to outperform cylindrical and beehive designs by naturally damping valvetrain harmonics. Their tapered coil diameter and spacing act as built-in shock absorbers, reducing stress and wear—especially vital in engines pushed to the edge by aggressive aftermarket setups.
Built for Boost, RPM, and Reliability
- Super-Finished Surface Treatment: Each spring is treated with a proprietary multi-step heat and finish process for consistent performance and long-term durability.
- Titanium Retainers: Lightweight and strong, built to handle aggressive cam profiles and elevated boost levels.
- Chromoly Seats: Durable and precisely machined for optimal spring alignment and longevity.
Ideal for High-Revving RB26DETT Setups
If you're chasing high RPMs and serious boost, the GSC5075 Single Conical Valve Spring Kit delivers the control, strength, and reliability your RB26DETT build demands.
Fitment:
- 1989-1994 Nissan Skyline GT-R R32 RB26DETT
- 1995-1998 Nissan Skyline GT-R R33 RB26DETT
- 1999-2002 Nissan Skyline GT-R R34 RB26DETT
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