IAG Stage 4 Extreme EJ25 2.5L Subaru Closed Deck Short Block for WRX STI LGT FXT.

IAG Stage 4 Extreme EJ25 2.5L Subaru Closed Deck Short Block for WRX STI LGT FXT.

$8,799.99 Sold out

Product Part Number: IAG-ENG-1453

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Local Pickup Available

Installation Services Offered

  • Description
  • Shipping / Refunds / FAQs
IAG Stage 4 Extreme Closed Deck EJ25 Subarushort BlockThe IAG Stage 4 Extreme Short Block starts with brand new Subaru 2.5L EJ25 engine case halves. The case halves are split and the main webs are CNC machined in our Haas VF-4SS CNC mill for 9.5mm pins to reduce distortion and movement of the case in extreme conditions. The case halves are then reassembled and IAG machines the case to accept the IAG CLOSED Deck Inserts that transform the block into a solid deck. The unique inserts feature small passages that allow needed coolant flow to the deck surface. The case halves are then CNC machined for our new Fire-Lock head gasket solution that is loosely derived from diesel technology where a counterbore step is machined around each cylinder bore allowing specially sized fire rings to drop into the machined area and head gasket bores. The Stage 4 Extreme case is CNC drilled and tapped to fit 14mm head studs. Utilizing the new Fire-Lock gasket solution along with larger IAG / ARP 14mm head studs, nuts, and washers reduce the chances of the heads lifting under extreme boost conditions. The short block is then Deck Plate bored and honed to 99.75mm in our in-house Sunnen SV-30 the most advanced automotive cylinder hone available. IAG's in-house honing process is able to set custom piston to wall clearances to best fit your needs. The modified case halves are then assembled using a IAG Billet crankshaft by Callies that is matched to ACL or King race main bearings. Custom IAG TRI-BEAM +2mm connecting rods by Manley and ARP 625+ rod bolts are utilized along with ACL or King race rod bearings. The case halves are sealed with OEM sealant and ARP main bolts. IAG-Spec 99.75mm Custom Forged Pistons with .250" / .927" wrist pins with electroless nickel plated tops and ring area are chosen to finish the Stage 4 Extreme short block.
  • The IAG Stage 4 Extreme Short Block has a power output rating of 1100BHP.
  • All IAG short blocks are balanced and blueprinted.
  • Compression Ratio: 8.5:1 on D Cylinder Heads (EJ255) 8.2:1 on B, V and W EJ257 Heads with standard thickness gasket
  • Head Gasket Required: Note: IAG Fire-Lock .051" Head Gaskets with IAG-Spec Alloy Ring SetNote: PN# IAG-ENG-1740

Additional Attributes:

  • GTIN: 00887753778369

Extened Information:

  • Emissions : Not Legal For C.A.R.B. - This part is not legal for sale or use in C.A.R.B. restricted areas
  • Life Cycle Status: Available To Order

Packaging:

  • Quantity of Each: 1
  • Package UOM: EA
  • Dimension: 19 x 105 x 16 inches

HOW LONG DO ORDERS TAKE TO SHIP?

  • We are typically very quick and have a 24-48 hour turnaround time. Transit time depends on your order and which warehouse we are shipping from, but typical transit times are between 5-7 business days from one side of the US to the other.

DO YOU PRICE MATCH?

  • Yes, we do price match reputable competitors in the marketplace. If you find a product cheaper elsewhere, please email us the (1) link of the product from our website and (2) the link to the competitor site. We will make an assessment on our end if we are able to price match or not and respond to you via email.

DO YOU GUYS INSTALL?

  • Our shop services range from routine maintenance, to full on track monsters. If you purchased a part from us, ask us about scheduling time to have the part installed!

DO ALL YOUR PRODUCTS SHIP FREE?

  • No, only specifically marked items or orders over $100 will ship for free unless indicated otherwise.

WHAT'S YOUR DOMESTIC SHIPPING POLICY?

  • UPS handles all US Shipments.

WHAT'S YOUR INTERNATIONAL SHIPPING POLICY?

  • DHL or UPS only.

WHAT'S YOUR RETURN POLICY?

  • 30-Day Money Back Guarantee as long as the product has ZERO signs of use and HAS NOT been opened. 

WHAT'S YOUR POLICY ON ADVERTISED PRICING?

  • ALL Pricing displayed specifically reflects Manufacture's Advertised Pricing as most companies will not allow the sale of their items below this threshold. 

WHAT'S YOUR POLICY REGARDING FITMENT ISSUES?

  • IF an item does not fit, then we'd be more than happy to guide the fitment process with you over the phone or over email. 

WHAT'S YOUR POLICY REGARDING FRAUDULENT CHARGES / CHARGEBACKS?

  • If we receive a declined notice or chargeback, then your account will be billed an additional $50.

DO YOU WORK WITH OTHER COMPANIES THAT AREN'T LISTED ON YOUR SITE?

  • We most certainly do; please shoot us an email if you want something that you don't see to sales@andrewtechautomotive.com

I WANT TO ORDER SOMETHING NOT LISTED ON YOUR SITE, CAN YOU HELP?

  • Of course! Please email or call us with an inquires for both stock count, brand inquiry, or better pricing!