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  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)
  • IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX (IAG-ENG-1255)

    MAP price match guarantee SET YOUR BUILD GOALS & GO!
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    IAG Performance

    IAG Stage 2.5 FA20 DIT Closed Deck Short Block | 2015-2021 Subaru WRX

    PART# IAG IAG-ENG-1255
    Unbeatable Price Guarantee

    ( Honestly, if you find a better price we'll match it. )

    Give us a call to get the best prices and parts for your build. Or, just call us with a cool racing story...either way we're here.

    Email - sales@maperformance.com

    Phone 1-888-627-3736



    $ 5,149.99

    MAP price match guarantee Unbeatable Price Guarantee

      +1-888-627-3736
    this item typically ships in 3-4 Weeks!
    Free delivery by , to your door when ordered within hrs and mins
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    Subaru WRX FA20 DIT Stage 2.5 Closed Deck Short Block by IAG Performance

    The IAG Stage 2.5 short block starts with new Subaru FA 2.0L engine case halves that are machined for improved oiling. Then IAG machines the case halves assembled together in our Haas VF-4SS CNC mill 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 IAG Stage 2.5 short block starts with new Subaru FA 2.0L engine case halves that are machined for improved oiling. Then IAG machines the case halves assembled together in our Haas VF-4SS CNC mill 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 short block is measured and assembled using a new 2015-20 Subaru 2.0L WRX crankshaft that is matched to King main bearings. Brian Crower H-Beam rods with ARP2000 rod bolts are utilized along with King or ACL rod bearings. The case halves are sealed with new OEM case bolts and sealant. Finally, IAG-Spec 86.25mm forged pistons are spec'd and installed along with an OEM oil plug finishing off the short block.

    Features

    • Case Halves - Converted to Closed Deck using brand new Subaru OEM case halves
    • Case Machining - Modified for improved oiling
    • Case Machining - Bored and honed to 86.25mm
    • Pistons - IAG-Spec 86.25mm Forged Pistons, Ring Set, and .150" x 2.250" Chromoly Wrist Pins
    • Connecting Rods - Brian Crower H-Beam with ARP2000 Rod Bolts
    • Rod Bearings - ACL or King XPG
    • Main Bearings - King XPG
    • Crankshaft - New Subaru FA20 DIT WRX crankshaft
    • Case / Main Bolts - Standard Subaru case bolts
    • Hardware - OEM Oil Plug - comes preinstalled at the oil pan location
    • Compression Ratio - 10.6:1 (stock compression) on standard gasket thickness
    • Power - The IAG Stage 2.5 Short Block has a power output rating of 675BHP

    Benefits

    • Improved engine efficiency
    • Increased performance & power potential
    • High quality, durable components

    Applications

    • 2015 - 2021 Subaru WRX

    What's In The Box?

    • 1 - Complete IAG Stage 2.5 FA20DIT Closed Deck Short Block
    • OPTIONAL - Oil Plug & Seal Kit

    References

    Warranty

    • IAG Performance Limited 1-Year / 12,000-Mile Warranty

    Subaru WRX FA20 DIT Stage 2.5 Closed Deck Short Block by IAG Performance

    The IAG Stage 2.5 short block starts with new Subaru FA 2.0L engine case halves that are machined for improved oiling. Then IAG machines the case halves assembled together in our Haas VF-4SS CNC mill 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 IAG Stage 2.5 short block starts with new Subaru FA 2.0L engine case halves that are machined for improved oiling. Then IAG machines the case halves assembled together in our Haas VF-4SS CNC mill 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 short block is measured and assembled using a new 2015-20 Subaru 2.0L WRX crankshaft that is matched to King main bearings. Brian Crower H-Beam rods with ARP2000 rod bolts are utilized along with King or ACL rod bearings. The case halves are sealed with new OEM case bolts and sealant. Finally, IAG-Spec 86.25mm forged pistons are spec'd and installed along with an OEM oil plug finishing off the short block.

    Features

    • Case Halves - Converted to Closed Deck using brand new Subaru OEM case halves
    • Case Machining - Modified for improved oiling
    • Case Machining - Bored and honed to 86.25mm
    • Pistons - IAG-Spec 86.25mm Forged Pistons, Ring Set, and .150" x 2.250" Chromoly Wrist Pins
    • Connecting Rods - Brian Crower H-Beam with ARP2000 Rod Bolts
    • Rod Bearings - ACL or King XPG
    • Main Bearings - King XPG
    • Crankshaft - New Subaru FA20 DIT WRX crankshaft
    • Case / Main Bolts - Standard Subaru case bolts
    • Hardware - OEM Oil Plug - comes preinstalled at the oil pan location
    • Compression Ratio - 10.6:1 (stock compression) on standard gasket thickness
    • Power - The IAG Stage 2.5 Short Block has a power output rating of 675BHP

    Benefits

    • Improved engine efficiency
    • Increased performance & power potential
    • High quality, durable components

    Applications

    • 2015 - 2021 Subaru WRX

    What's In The Box?

    • 1 - Complete IAG Stage 2.5 FA20DIT Closed Deck Short Block
    • OPTIONAL - Oil Plug & Seal Kit

    References

    Warranty

    • IAG Performance Limited 1-Year / 12,000-Mile Warranty

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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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