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IAG Stage 4 Plus EJ25 Closed Deck Case Halves Bored Honed w/ 1/2in Head Stud conversion
Subaru Models (inc. 2006-2014 WRX / 2004+ STI)
Features & Product Details
RallySport Direct now carries highly sought-after high-performance upgrades and accessories brought to you by IAG Performance.
On this page, you are looking at the IAG Performance Stage 4 Plus EJ25 Closed Deck Case Halves with 1/2" Head Stud Conversion. These have also been bored and honed to 99.75mm.
This is one of the most cost-effective short block modifications for high-horsepower applications for those of you who aren't ready to jump into billet waters. The deck surface is machined to accept specially CNC cast inserts that strengthen the weakest point of the OEM case at the upper sleeve.
Here are more details: