GSC Power-Division S2 Camshafts for 08+ Subaru STI
These GSC Power-Division Billet S2 camshafts are for the USDM STi with Intake only AVCS. These cams are built with high horsepower Subies in mind. When you hit that magical number of 500WHP and up, you need certain mods to utilize the true potential of the EJ. Upgraded valve springs are required; Beehive valve springs are recommended but not required.