IAG 3mm Thick Phenolic Spacers (1 pair) - Subaru STI 04-20, WRX 02-14 FK8 Bushings GSC Power-Division Billet S2 Camshafts

GSC Power-Division Billet S2 Camshafts for the 2008-19 Subaru STI EJ257 with Dual AVCS are built to suit the higher horsepower engine builds

They designed tabs to be laser cut and CNC bent from 5052 aluminum

Proper bed-in required

(10) 8" zip ties

IAG 3mm Thick Phenolic Spacers (1 pair) - Subaru STI 04-20, WRX 02-14 FK8 Bushings GSC Power-Division Billet S2 CamshaftsIAG Performance is proud to offer 3mm phenolic grade CE spacers for your 2. 0L and 2. 5L engine. This is a simple, cost effective way to maximize the power of your current set up. The 3mm spacer is thick enough to provide superior thermal insulation to the factory steel gasket but thin enough to avoid clearance issues that can arise with the 8mm spacer Why it works: The concept behind the phenolic spacer is simple: isolate the heat produced by the