IAG Stage 4 CNC Ported Heads w/ +1mm GSC Valves for 02-05 WRX 2.0L S20 w/ Chamber Matching(Cams / Lifters Sold Separately). 2020-subaru-wrx sti-sti IAG 900 EJ25 Closed Deck

IAG 900 EJ25 Closed Deck Long Block w/ Stage 4 Heads: The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete

IAG-Spec H-Beam connecting rods and ARP rod bolts are utilized along with ACL or King race rod bearings

) Multiple Times stiffer and stronger than the stock case Precision machined for a superior surface finish Hard anodized to avoid marking or straining Additional Options: Bore & Hone: Bore & Hone to customer specification $300-$350 Fire-Lock machine the deck surface $200 Case Bolts: ARP Case Bolts Head Studs: IAG / ARP 14mm Head Studs

Our test cars serve as daily drivers

GTIN: 00887753779915

IAG Stage 4 CNC Ported Heads w/ +1mm GSC Valves for 02-05 WRX 2.0L S20 w/ Chamber Matching(Cams / Lifters Sold Separately). 2020-subaru-wrx sti-sti IAG 900 EJ25 Closed DeckIAG Stage 4 CNC Ported Heads with +1mm GSC Valves: IAG's Stage 4 Cylinder Head Package utilizes a CNC porting program for the WRX STI 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 WRX OEM 2. 0L S20 head castings directly from Subaru of America. The bare castings are visually inspected then fixtured into our in house Centroid 5 axis CNC Machine,