GSC Billet S1 Camshaft - Dual AVCS (08-21 STI)

GSC 7000 Series Full Billet Camshafts are 100% in-house cut and ground on the newest, most precise CNC machines available. The 7000 Series camshafts take the import valve train market to another level, being the only readily available and affordable billet camshafts for sport compact/import performance cars.

GSC Power-Division billet S1 camshafts for the 2008 - 2021 STI EJ257B With Dual AVCS. Good for stock frame turbo or up to 500 WHP (GT35R) upgrades. Upgraded valve springs are required; Beehive valve springs are recommended but not required.

FEATURES

• Upgraded valve springs are required
• Beehive valve springs are recommended but not required.
• Check Pictures for cam placement. Long nose= Left Side. Short nose = Right Side
• Due to the lobe size, head castings will need to be filled down slightly for clearance.

Install to OEM shim spec's for intake and exhaust