IAG Stage 4 CNC Ported Heads w/ +1mm GSC Valves 07 STI V25 Casting (Cams / Lifters Sold Separately). 2011-subaru-impreza-wrx 2003-2004 Subaru Forester 2

2003-2004 Subaru Forester 2

thus reducing aeration

Whiteline 04-07 Subaru WRX/STi / 98-02 Subaru Forester Front Upper Strut Mounts - Offset Assembly

The cast aluminum oil pan was designed with fitment for a larger variety of popular headers in mind

The IAG RockBlocker smoked tail light overlay film kit is made from a high impact resistant film with an adhesive backing

IAG Stage 4 CNC Ported Heads w/ +1mm GSC Valves 07 STI V25 Casting (Cams / Lifters Sold Separately). 2011-subaru-impreza-wrx 2003-2004 Subaru Forester 2IAG's Stage 4 Cylinder Head Package utilizes a CNC porting program for the V25 heads that was developed over the past five years and tested on the most successful high horsepower Subarus. The ported head package starts with brand new STI V25 OEM 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