IAG Performance
IAG Performance IAG-ENG-S550 IAG 550 2.5L Subaru Short Block for WRX, STI, Legacy GT, Forester XT - 550 BHP
IAG Performance IAG-ENG-S550 IAG 550 2.5L Subaru Short Block for WRX, STI, Legacy GT, Forester XT - 550 BHP
Regular price
$3,999.99 USD
Regular price
$3,999.99 USD
Sale price
$3,999.99 USD
Unit price
per
Shipping calculated at checkout.
The IAG 550 Short Block is designed for modified EJ25 Subarus that need a stronger short block to support increased cylinder pressures created by additional boost pressure. The IAG 550 short block features IAG Spec H-Beam forged connecting rods. The upgraded connecting rods and race bearings are able to support additional engine load produced by larger turbochargers or increased boost which the OEM STI rods found in the Stock short blocks cannot support reliably. Each IAG 550 Short Block starts with brand new EJ25 Subaru 2.5L, 99.5mm stock bore engine case halves as standard. The case haves are carefully measured and assembled using a new 2017+ Subaru 2.5L nitride treated STI crankshaft, which is matched to ACL or King race main bearings. The IAG 550 Short Block features IAG Spec H-Beam Connecting Rods with ARP2000 rod bolts, 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 carefully selected, measured, and installed to finish off the short block.
This Part Fits:
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2005 | Saab | 9-2X | Aero | |
| 2006 | Saab | 9-2X | Aero | |
| 2004 | Subaru | Baja | Turbo | |
| 2005 | Subaru | Baja | Turbo | |
| 2006 | Subaru | Baja | Turbo | |
| 2008 | Subaru | Forester | 2.5 XT | |
| 2008 | Subaru | Forester | Sports 2.5 XT | |
| 2010 | Subaru | Forester | XT Sports | |
| 2011 | Subaru | Forester | XT Sports | |
| 2012 | Subaru | Forester | XT Sports | |
| 2011 | Subaru | Forester | XT Touring | |
| 2012 | Subaru | Forester | XT Touring | |
| 2013 | Subaru | Forester | XT Touring | |
| 2009 | Subaru | Impreza | 2.5 GT | |
| 2010 | Subaru | Impreza | 2.5 GT | |
| 2002 | Subaru | Impreza | WRX | |
| 2003 | Subaru | Impreza | WRX | |
| 2004 | Subaru | Impreza | WRX | |
| 2005 | Subaru | Impreza | WRX | |
| 2006 | Subaru | Impreza | WRX | |
| 2007 | Subaru | Impreza | WRX | |
| 2008 | Subaru | Impreza | WRX | |
| 2009 | Subaru | Impreza | WRX | |
| 2010 | Subaru | Impreza | WRX | |
| 2011 | Subaru | Impreza | WRX | |
| 2012 | Subaru | Impreza | WRX | |
| 2013 | Subaru | Impreza | WRX | |
| 2014 | Subaru | Impreza | WRX | |
| 2010 | Subaru | Impreza | WRX GT | |
| 2009 | Subaru | Impreza | WRX Premium | |
| 2010 | Subaru | Impreza | WRX Premium | |
| 2011 | Subaru | Impreza | WRX Premium | |
| 2012 | Subaru | Impreza | WRX Premium | |
| 2010 | Subaru | Impreza | WRX SE | |
| 2004 | Subaru | Impreza | WRX STI | |
| 2005 | Subaru | Impreza | WRX STI | |
| 2006 | Subaru | Impreza | WRX STI | |
| 2007 | Subaru | Impreza | WRX STI | |
| 2008 | Subaru | Impreza | WRX STI | |
| 2009 | Subaru | Impreza | WRX STI | |
| 2010 | Subaru | Impreza | WRX STI | |
| 2011 | Subaru | Impreza | WRX STI | |
| 2012 | Subaru | Impreza | WRX STI | |
| 2013 | Subaru | Impreza | WRX STI | |
| 2014 | Subaru | Impreza | WRX STI | |
| 2010 | Subaru | Impreza | WRX STI Special Edition | |
| 2006 | Subaru | Impreza | WRX TR | |
| 2007 | Subaru | Impreza | WRX TR | |
| 2012 | Subaru | Legacy | 2.5GT | |
| 2005 | Subaru | Legacy | GT | |
| 2006 | Subaru | Legacy | GT | |
| 2007 | Subaru | Legacy | GT | |
| 2008 | Subaru | Legacy | GT | |
| 2006 | Subaru | Legacy | GT spec.B | |
| 2007 | Subaru | Legacy | GT spec.B | |
| 2008 | Subaru | Legacy | GT spec.B | |
| 2009 | Subaru | Legacy | GT spec.B | |
| 2008 | Subaru | Outback | 2.5 XT | |
| 2005 | Subaru | Outback | XT | |
| 2006 | Subaru | Outback | XT | |
| 2007 | Subaru | Outback | XT | |
| 2008 | Subaru | Outback | XT | |
| 2005 | Subaru | Outback | XT Limited | |
| 2006 | Subaru | Outback | XT Limited | |
| 2007 | Subaru | Outback | XT Limited | |
| 2008 | Subaru | Outback | XT Limited | |
| 2009 | Subaru | Outback | XT Limited | |
| 2015 | Subaru | WRX STI | ||
| 2016 | Subaru | WRX STI | ||
| 2017 | Subaru | WRX STI | ||
| 2018 | Subaru | WRX STI | ||
| 2019 | Subaru | WRX STI | ||
| 2020 | Subaru | WRX STI | ||
| 2021 | Subaru | WRX STI |
