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IAG Stage 2 EJ25 Subaru Short Block (Part Number: )
IAG Stage 2 EJ25 Subaru Short Block (Part Number: )
IAG Stage 2 EJ25 Subaru Short Block (Part Number: )
IAG Stage 2 EJ25 Subaru Short Block (Part Number: )
IAG Stage 2 EJ25 Subaru Short Block (Part Number: )
IAG Stage 2 EJ25 Subaru Short Block (Part Number: )
IAG Stage 2 EJ25 Subaru Short Block (Part Number: )
IAG Stage 2 EJ25 Subaru Short Block (Part Number: )
IAG Stage 2 EJ25 Subaru Short Block
Subaru Models (inc. 2006-2014 WRX / 2004+ STI)
Write a Review | 4 Q&As
Part # IAG-ENG-1200
$3,199.99
msrp: $3,359.99

Only 1 left!

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 2 Short Block. This particular short block features stronger connecting rods that are combined with forged pistons that are carefully assembled with a new 2017+ Subaru 2.5L Nitride treated STI crankshaft that is matched with ACL bearings.

This short block has a power output rating of 650BHP.

Here are the details:

  • Brand new Subaru OEM case halves bored and honed in-house to 99.5mm
  • Manley 99.5mm Platinum Forged Pistons and Ringset
  • .210" Steel pins, clips along with coated skirts and offset wrist pins
  • IAG Spec H-Beam Rods
  • ARP2000 Rod bolts
  • ACL rod and main bearings 
  • New Subaru Nitride Treated 2017+ STI crankshaft
  • Standard FHI Subaru case bolts
  • Note: Compression ratio is subject to change based on cylinder heads and head gaskets used. 

  • 8.2:1 on B, V, and W cylinder heads (EJ257)
  • 8.5:1 on D cylinder heads (EJ255)
  • Specifications

    Brand: IAG Performance
    Assembly: Assembled
    Bore Size (mm): 99.5
    Compression Ratio: 8.2:1
    Crank: OEM Forged
    Crank Size: OEM
    Displacement: 2.5L
    Piston Material: Forged Aluminum
    Rods: Forged
    Mfgr. Warranty: 12 Months / 12k Miles
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days


    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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    QUESTIONS & ANSWERS

    • Q: Compatibility  Jeffrey23 days ago

      Will this work for a 2003 WRX ? I was looking at a hybrid setup with 2.0 heads.
      • 0 of 0 people found the following answer helpful

        A:  The heads will require some machining, as they will not bolt directly on to the block, however, you can make it work for sure.

        Devan M. @ RallySport Direct 22 days ago  
          
        Was this answer helpful?
    • Q: IAG Stage 2 - desc typos?  Dirtbikegg19851 month ago

      This description is confusing. 99.75mm vs 99.5..Can I assume this will be what IAGs website states is Stage 2 and these are just typos?
      • 0 of 0 people found the following answer helpful

        A:  Thank you for pointing this out to us! I went ahead and had my website team fix that issue!

        Devan M. @ RallySport Direct 1 month ago  
          
        Was this answer helpful?
    • Q: 07 wrx stock head compatible ?  David Edwards3 months ago

      Can i reuse my stock 07 wrx heads or will they need to be built as well ?
      • 0 of 0 people found the following answer helpful

        A:  You could use your stock heads however, they will need to be modified for the 2.5 cooling channels.

        Devan M. @ RallySport Direct 3 months ago  
          
        Was this answer helpful?

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