GSC Power-Division Beehive Valve Spring Kit for FA20 WRX-BRZ-FRS Breather Plumbing and Fittings layout (set up race

layout (set up race

More durable design

One of the first things to note about the OE exhaust manifold are the several points where flow is decreased due to a neckdown in piping diameter

These will never be the bottleneck in your fuel system

This Block is rated to 750 BHP before adding upgrades

GSC Power-Division Beehive Valve Spring Kit for FA20 WRX-BRZ-FRS Breather Plumbing and Fittings layout (set up raceMax RPM: 9,500 RPM Max boost: 35 psi Beehive Spring Coil Bind 0. 800 Install Height 1. 308 1. 315 Seat Pressure 89 87 lbs Open Pressure @ 11mm lift 231 lbs @ 0. 875" 229 lbs @ 0. 882" Maximum Valve Lift 0. 448 Includes: 16 Dual Springs 16 Spring Seat Locators 16 Titanium Retainers Beehive Spring Benefits: Rev faster Lighter components More durable design Less stress on valve train components Lower spring frequency for more precise valve control More