Bullet Race Engineering
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We manufacture billet engine blocks for extreme high performance race applications, and CNC port cylinder heads. We have Australia's largest range of CNC port programs. We have a complete engine machine shop to machine, build and dyno tune your high performance engine. With over 20 years experience, Bullet has a reputation for quality and service. We count numerous national and world record holder
27/03/2026
Looking to take your valvetrain performance to the next level?
We’re now stocking GSC Conical Valve Springs.
What sets a conical spring apart from a cylindrical or beehive spring is harmonic stability.
A conical spring has varying diameter coils and a progressive rate which causes a self damping effect. If one coil reaches its harmonic frequency, the neighboring coils act to dampen the resonating coil. This effect dramatically decreases spring oscillations at high RPMs. Every GSC Conical spring offers a Super Finished surface treatment to go along with cutting edge, patented heat treatment procedures to make for the most reliable high performance spring available for the aftermarket.
If you’re building for performance and don’t want to compromise on valvetrain control, these springs are a proven upgrade.
Get in touch with us today to find the right setup for your build.
GSC5097 – 4G63 HP Ti Retainer & Spring Kit — $816
GSC5027 – RB26 Extreme Pressure Conical Spring Kit — $1,565
GSC5086 – 2JZ Extreme Ti Retainer & Conical Spring Kit — $1,270
Click here to claim your Sponsored Listing.
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Telephone
Address
6 Belfree Drive Green Fields
Adelaide, SA
5107
Opening Hours
| Monday | 7am - 4am |
| Tuesday | 7am - 4am |
| Wednesday | 7am - 4am |
| Thursday | 7am - 4am |
| Friday | 7am - 4am |
