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  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)
  • IAG Stage 2 Tuff 2.5L Subaru Short Block | Subaru Multiple Fitments (IAG-ENG-1213)

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

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    Stage 2 Tuff Subaru Short Block - 2.5L

    The IAG Stage 2 Tuff short block starts with new Subaru 2.5L EJ25 engine case halves that are bored and honed to 99.75 on our in-house Sunnen SV-30 the most advanced automotive cylinder hone available. IAG's in-house honing process is able to set piston to wall clearances tighter for a quieter running engine. 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. Next, IAG-Spec Tuff H-Beam rods with ARP Rod Bolts are utilized to increase the power rating slightly at the expense of being slightly heavier. The connecting rods are matched to ACL or King race rod bearings. The case halves are sealed with new OEM main case bolts and sealant. Finally, IAG-Spec JE 99.75mm Forged Pistons are added to finish off the short block. 

    Features

    • The IAG Stage 2 Tuff Short Block has a power output rating of 625BHP
    • Compression Ratio 8.5:1 on D Cylinder Heads (EJ255)
    • Compression Ratio 8.2:1 on B, V and W EJ257 Heads 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, bored and honed to 99.75mm.
    • Pistons - IAG-Spec JE 99.75mm Forged Pistons, Ring Set, .180" Chromoly Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pin)
    • Connecting Rods - IAG-Spec Tuff H-Beam / 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 is IAG-ENG-1211, which has been superseded to IAG-ENG-1213

    Stage 2 Tuff Subaru Short Block - 2.5L

    The IAG Stage 2 Tuff short block starts with new Subaru 2.5L EJ25 engine case halves that are bored and honed to 99.75 on our in-house Sunnen SV-30 the most advanced automotive cylinder hone available. IAG's in-house honing process is able to set piston to wall clearances tighter for a quieter running engine. 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. Next, IAG-Spec Tuff H-Beam rods with ARP Rod Bolts are utilized to increase the power rating slightly at the expense of being slightly heavier. The connecting rods are matched to ACL or King race rod bearings. The case halves are sealed with new OEM main case bolts and sealant. Finally, IAG-Spec JE 99.75mm Forged Pistons are added to finish off the short block. 

    Features

    • The IAG Stage 2 Tuff Short Block has a power output rating of 625BHP
    • Compression Ratio 8.5:1 on D Cylinder Heads (EJ255)
    • Compression Ratio 8.2:1 on B, V and W EJ257 Heads 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, bored and honed to 99.75mm.
    • Pistons - IAG-Spec JE 99.75mm Forged Pistons, Ring Set, .180" Chromoly Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pin)
    • Connecting Rods - IAG-Spec Tuff H-Beam / 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 is IAG-ENG-1211, which has been superseded to IAG-ENG-1213

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    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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