IAG 1150 CNC Ported Drag W25 Cylinder Heads Package W/ GSC S2 Cam & Lifters For 08-18 STI

IAG 1150 CNC PORTED DRAG CYLINDER HEADS PACKAGE  MAXIMUM POWER FOR DRAG RACING The IAG 1150 CNC Ported Drag Cylinder Heads are designed for drag racing and competition. These fully CNC ported heads provide a significant upgrade in long term performance over the IAG 950 heads. These heads work great for cars where getting the most power with maximum reliability is the goal. The IAG 1150 heads are the best heads available for high-horsepower drag racing. They are designed to support up to 1150 BHP with supporting mods. These heads include upgraded Ferrea Valves, GSC Viton Valve Stem Seals, Upgraded GSC Valve Guides, Ferrea Dual Drag Valve Springs with Titanium Retainers, and Ferrea Keepers. GSC S2 or S3 Camshafts are available with Kelford DLC Coated valve lifter buckets. We also offer an optional chamber modification service (see below) for EJ20 heads to allow use on EJ25 short blocks. BUILT WITH 100% NEW COMPONENTS Each IAG 1150 Cylinder Hea