IAG Stage 2 2.5L Subaru Short Block | 2006-2014 Subaru WRX, 2004-2021 Subaru WRX STI, and 2005-2009 Subaru Legacy (IAG-ENG-1202)
IAG PerformanceIAG 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 - 2021 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- The original part number was IAG-ENG-1200, which has been superseded to IAG-ENG-1202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
Great customer service, fast shipping. Fired up immediately after priming oil pump. Perfect oil pressure, and would expect nothing less from IAG. So far so good. Will update once it is broken in and tuned.
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!
