IAG Stage 5 CNC Ported Heads w/ +1mm Ferrea Valves for 06-14 WRX 06-13 FXT 07-09 LGT D25 Casting (Cams / Lifters Sold Separately). 2019-subaru-wrx sti-s209 Allows rotation of the OEM

Allows rotation of the OEM or aftermarket intake manifold

GTIN: 00887753779427

Due to the higher durometer used in the street series bushings

These engines offer easy installation for customers seeking a complete "drop-in" engine package for their WRX

The block is then paired up with our Stage 4 Fully CNC Ported Cylinder Heads to deliver maximum flow for high hp applications

IAG Stage 5 CNC Ported Heads w/ +1mm Ferrea Valves for 06-14 WRX 06-13 FXT 07-09 LGT D25 Casting (Cams / Lifters Sold Separately). 2019-subaru-wrx sti-s209 Allows rotation of the OEMIAG's Stage 5 Cylinder Head Package utilizes a CNC porting program for the D25 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 2006 14 WRX D25 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