
IAG Stage 4 Tuff EJ25 Subaru Closed Deck Short Block
Subaru Models (inc. 2006-2014 WRX / 2004+ STI)
Product Resources
Features & Product Details
RallySport Direct carries the highly sought-after high-performance upgrades and accessories brought to you by IAG Performance. They build some of the best and most reliable engines for your Subaru! Perfect for your crazy race car build, rally car build, daily driver or off-road machine!
This is the IAG Performance Stage 4 Tuff EJ25 Subaru Closed Deck Short Block. This is a carefully blueprinted and assembled racing engine block designed to handle the perils of increased power and torque output. This is a brand-new engine with new Subaru 2.5L case halves with all the right guts machined and assembled with a Haas VF-4SS mill to accept the IAG Closed Deck inserts. Additionally, the short block has been machined to fit 14mm head studs. The final finish to this block is machining for IAG Fire-Lock head gaskets, a revolutionary step in Subaru performance. These utilize an alloy ring at the top surface of the deck around the cylinder along with a special composite head gasket for high boost applications.
HIGHLIGHTS:
NOTE: COMPRESSION RATIO IS SUBJECT TO CHANGE BASED ON CYLINDER HEADS
Specifications
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QUESTIONS & ANSWERS
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Q: Shipping cost Mkenya mark1 year ago
I have seen on the page that its free shipping,please confirm is it free upto nairobi kenya
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A: This does qualify for free standard shipping inside of the US. For international shipments it would be subject to the shippers rates. You can enter your zip code in the cart for an estimated shipping charge.
Lane H. @ RallySport Direct 1 year ago
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Q: IAG Stage 4 tuff ej25 iheartsubarus20x025742 years ago
What is the recommended break in period for this setup?
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A: IAG will include their recommended break-in procedure with their documentation. It is too long for this Q&A section.
Lane H. @ RallySport Direct 1 year ago
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Q: Horsepower tutland2 years ago
How much horsepower is this assembly rated for?
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A:
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A: "Power Output Rating (BHP): 1000"
R Car
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Q: Stage 4 short block wrx ChrisBarreto972 years ago
Will this fit with OEM transmission on legacy gt?
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A: Yes, this will bolt up to the Legacy GT transmission.
Marcus E. @ RallySport Direct 2 years ago
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Q: Block material Ottobot3 years ago
I’m wondering if this upgraded block is forged as well because in the past I’ve experienced that OEM block is soft and any thread in the block gets stripped and have to be helicoiled to repair.
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A: The case halves are OEM Subaru parts that are converted to closed deck and tapped for larger head studs in-house by IAG.
Marcus E. @ RallySport Direct 3 years ago
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