GSC Subaru EJ Series Chrome Polished Exhaust Valve - 33mm Head (+1mm) - SET of 8 EJ Timing Components Drain back design assures that

Drain back design assures that any oil accumulation ends up where it needs to be: in the oil pan

This kit is for the NON-AVCS version

Onboard Knock Control

This technology outperforms conventional fire ring solutions

GSC Subaru EJ Series Chrome Polished Exhaust Valve - 33mm Head (+1mm) - SET of 8 EJ Timing Components Drain back design assures thatStem Diameter (mm) 6. 0mm Overall Length (mm) 104. 25mm Head Diameter (mm) 33mm When creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on