IAG Stage 3 Pocket Ported Heads w/ +1mm GSC Valves & GSC S2 Cams for 18-20 STI N25 Casting. 2010-subaru-impreza-wrx sti 051" Head Gaskets with IAG-Spec

051" Head Gaskets with IAG-Spec Alloy Ring Set

GTIN: 00887753779915

GTIN: 00887753779496

IAG's in-house honing process is able to set piston to wall clearances tighter for a quieter running engine

The 2 piece billet aluminum bracket is CNC machined in our Westminster facility and features all the mounting holes required to relocate the AOS from the passenger side strut tower to the center firewall above the transmission pitch mount

IAG Stage 3 Pocket Ported Heads w/ +1mm GSC Valves & GSC S2 Cams for 18-20 STI N25 Casting. 2010-subaru-impreza-wrx sti 051" Head Gaskets with IAG-SpecIAG Stage 3 Pocket Port Cylinder Head Package: The head package centers around our popular CNC pocket porting program which was developed over the last several years. Pocket porting removes excess OEM casting flash and the material underneath the valves. By smoothing and blending this area under the valve seat, significant flow capability can be achieved. The IAG Stage 2 pocket ported head package starts with brand new WRX STI OEM N25 head castings,