IAG Stage 3 Pocket Ported Heads w/ +1mm GSC Valves for 18-20 STI N25 Casting (Cams / Lifters Sold Separately). 2018-subaru-wrx sti-type ra Custom tuning is required
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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Oct 26 - Oct 31
Live Spec
IAG Stage 3 Pocket Ported Heads w/ +1mm GSC Valves for 18-20 STI N25 Casting (Cams / Lifters Sold Separately). 2018-subaru-wrx sti-type ra Custom tuning is requiredIAG 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,
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