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  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)
  • IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1202)

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    IAG Stage 2 2.5L Subaru Short Block | Subaru Multiple Fitments

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    Phone 1(888)627-3736



    $ 3,199.99   $ 3,359.99
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    IAG Stage 2 Subaru Short Block - 2.5L

    The IAG Stage 2 Short Block is designed for modified EJ25 Subaru's that need a beefed-up performance short block. The IAG Stage 2 short block builds off the Stage 1's strengths by adding IAG Spec H-Beam forged connecting rods. The upgraded rods and bearings are able to support additional engine load produced by larger turbochargers that the OEM STI rods cannot support reliably. Each IAG Stage 2 Short Block starts with new Subaru 2.5L 99.5mm stock bore EJ25 engine case halves as standard. The short block is measured and assembled using a new 2017+ Subaru 2.5L nitride treated STI crankshaft that is matched to ACL or King race main bearings. IAG-Spec H-Beam rods and ARP2000 rod bolts are utilized along with ACL or King race rod bearings. The case halves are sealed with new OEM main case bolts and sealant. Finally, IAG-Spec JE 99.5mm Forged Pistons are spec'd and installed finishing off the short block. 

    Features

    • Power Output Rating of 575BHP
    • Compression Ratio: 8.5:1 on D Cylinder Heads (EJ255)
    • Compression Ratio: 8.2:1 on B, V and W Heads (EJ257) with standard thickness gasket
    • All IAG Short Blocks are balanced and blueprinted

    Applications

    • 2002 - 2005 Subaru WRX (w/ mods)
    • 2006 - 2014 Subaru WRX
    • 2004 - 2019 Subaru WRX STI
    • 2005 - 2009 Subaru Legacy GT
    • 2004 - 2013 Subaru Forester XT

      DOES NOT FIT THE 2010-2012 Legacy

    What's In The Box?

    • Case Halves - Brand new Subaru OEM case halves 99.5mm stock bore
    • Pistons - IAG-Spec JE 99.5mm Forged Pistons, Ring Set, .180" Chromoly Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pin)
    • Connecting Rods - IAG-Spec H-Beam Rods with ARP2000 rod bolts
    • Rod / Main Bearings - ACL or King Race Bearings
    • Crankshaft - Standard New Subaru Nitride Treated 2017+ STI Crankshaft
    • Case / Main Bolts - Standard FHI Subaru case bolts

    Notes

    •  The original part number was IAG-ENG-1200, which has been superseded to IAG-ENG-1202

    IAG Stage 2 Subaru Short Block - 2.5L

    The IAG Stage 2 Short Block is designed for modified EJ25 Subaru's that need a beefed-up performance short block. The IAG Stage 2 short block builds off the Stage 1's strengths by adding IAG Spec H-Beam forged connecting rods. The upgraded rods and bearings are able to support additional engine load produced by larger turbochargers that the OEM STI rods cannot support reliably. Each IAG Stage 2 Short Block starts with new Subaru 2.5L 99.5mm stock bore EJ25 engine case halves as standard. The short block is measured and assembled using a new 2017+ Subaru 2.5L nitride treated STI crankshaft that is matched to ACL or King race main bearings. IAG-Spec H-Beam rods and ARP2000 rod bolts are utilized along with ACL or King race rod bearings. The case halves are sealed with new OEM main case bolts and sealant. Finally, IAG-Spec JE 99.5mm Forged Pistons are spec'd and installed finishing off the short block. 

    Features

    • Power Output Rating of 575BHP
    • Compression Ratio: 8.5:1 on D Cylinder Heads (EJ255)
    • Compression Ratio: 8.2:1 on B, V and W Heads (EJ257) with standard thickness gasket
    • All IAG Short Blocks are balanced and blueprinted

    Applications

    • 2002 - 2005 Subaru WRX (w/ mods)
    • 2006 - 2014 Subaru WRX
    • 2004 - 2019 Subaru WRX STI
    • 2005 - 2009 Subaru Legacy GT
    • 2004 - 2013 Subaru Forester XT

      DOES NOT FIT THE 2010-2012 Legacy

    What's In The Box?

    • Case Halves - Brand new Subaru OEM case halves 99.5mm stock bore
    • Pistons - IAG-Spec JE 99.5mm Forged Pistons, Ring Set, .180" Chromoly Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pin)
    • Connecting Rods - IAG-Spec H-Beam Rods with ARP2000 rod bolts
    • Rod / Main Bearings - ACL or King Race Bearings
    • Crankshaft - Standard New Subaru Nitride Treated 2017+ STI Crankshaft
    • Case / Main Bolts - Standard FHI Subaru case bolts

    Notes

    •  The original part number was IAG-ENG-1200, which has been superseded to IAG-ENG-1202

    Customer Reviews

    Based on 1 review
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    J
    J.
    IAG Stage 2 Shortblock

    Maperformance customer service and sales helped me with exactly what i needed and resolved any issues quick for me. Shipping was fast and nothing was damaged. Still in the break-in process and so far it feels excellent. 5 stars for MAP on the deals and IAG on the quality!

    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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