The GSC Power-Division S2 billet cams for the Hyundai G4KF Theta are designed for those with 600-800 HP in mind. Gains of 40-60 HP (depending on turbo) have been seen by simply bolting the S2 cams in.
Designed for a rev range of 3800-8000 RPMs
The S2 cams require an upgraded valve spring.
Forged billet core
Head clearancing required
The S2 cams require an upgraded valve spring.