IAG Stage 2 Pocket Ported Cylinder Heads for 06-14 WRX 06-13 FXT 07-09 LGT D25 Casting (Cams / Lifters Sold Separately). 2016-subaru-wrx-sti The IAG Stage 2 pocket

The IAG Stage 2 pocket ported head package starts with brand new WRX STI OEM N25 head castings

DBA 01-04 Outback 2

Next the heads are fixtured in our Serdi 3

the OEM guides are pressed out and replaced in favor of Ferrea Copper Bronze valve guides that are shaped to improve airflow

ACT pressure plates have precision cover stampings to provide rigidity and consistency

IAG Stage 2 Pocket Ported Cylinder Heads for 06-14 WRX 06-13 FXT 07-09 LGT D25 Casting (Cams / Lifters Sold Separately). 2016-subaru-wrx-sti The IAG Stage 2 pocketIAG Stage 2 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 B25 head castings,