IAG Stage 5 CNC Ported Heads w/ +1mm Ferrea Valves & GSC S3 Cams for 08-17 STI W25 Casting. 2017-subaru-wrx sti-sport-tech What sets this gasket apart

What sets this gasket apart from others is the separate stainless steel rings surrounding the bore holes

210" 9310 Steel Wrist Pins are added to finish the Stage 2

the heads are fixtured in our Serdi 3

5 Closed Deck Short Block that utilizes a brand new EJ25 Subaru case that is converted to closed deck and is bored and honed to 99

When installing the product the smoked film is applied first and then the red film is applied and cut out to reveal the smoked film using the included template

IAG Stage 5 CNC Ported Heads w/ +1mm Ferrea Valves & GSC S3 Cams for 08-17 STI W25 Casting. 2017-subaru-wrx sti-sport-tech What sets this gasket apartIAG's Stage 5 Cylinder Head Package utilizes a CNC porting program for the W25 heads that was developed over the past five years and tested on the most successful high horsepower Subaru's. The ported head package starts with brand new W25 OEM WRX STI head castings directly from Subaru of America. The bare castings are visually inspected then fixtured into our in house Centroid 5 axis CNC Machine, one of the most advanced precision engine machining