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IAG Stage 5 Cylinder Head Package w/ Combustion Chamber Mod (Cams / Lifter Buckets Sold Separately)
Subaru WRX 2002-2005
Features & Product Details
RallySport Direct now carries highly sought-after high-performance upgrades and accessories brought to you by IAG Performance.
This is the IAG Performance Stage 5 Cylinder Head Package With Combustion Chamber Mod.
These heads utilize a CNC porting program for the S20 heads that have been developed over the past 5 years, and they have been tested on the most successful high-horsepower Subarus. These begin as brand new S20 head castings directly from Subaru Of America, where they are visually inspected and then fixtures at IAG's in-house Centroid 5-axis CNC machine which is considered to be of the most advanced piece of precision engine machining equipment available worldwide.
COMBUSTION CHAMBER MODIFICATION
COMPONENTS AND MACHINING PROCESS
Note: Workmanship/parts warranty will only be available for professionally installed cylinder heads.