GSC High Pressure Conical Spring Set w/ Titanium Retainers WRX / STI


The GSC Power-Division High Pressure Conical Valve Spring with Ti Retainer for Subaru EJ platforms includes 16 titanium retainers, 16 conical valve springs, and 16 chromoly valve spring seats. High RPM and High Boost levels are not a problem on these kits. True conical valve springs are not a new concept and are industry proven to provide several key advantages over traditional spring designs. A major advantage of conical springs vs. traditional cylindrical or beehive springs is the damping and removal of valve train harmonics. Of the three designs, conical springs are the front runners in valvetrain harmonic stability. Utilizing a varying coil diameter as well as coil spacing, a conical spring acts as a natural harmonic damper in the transfer of valvetrain shock. This translates to less stress, less wear, and a longer life of the included components. This level of protection is needed in today’s engines being pushed to their physical and mechanical limits by aftermarket modifications. Every GSC conical spring offers a superfinished surface treatment to go along with the patented, multi-step heat treatment process. The finished product is an extremely reliable, high-performance spring allowing the users to push higher RPMs, use more aggressive cam profiles, and turn up higher boost pressures.

- Setup = HP Conical
- Coil Bind = 0.818 in
- Install Height = 1.303 in
- Seat Pressure = 109 lbs
- Open Pressure = 259lbs @ 0.850"
- Maximum Valve Lift = 0.453 in


2002-2007 WRX
2004-2007 STI
2008-2014 WRX

2008-2014 STI
2015-2021 STI

More Information
Color Titanium
Manufacturer GSC Power Division
Price 488.54
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