IAG Performance IAG-ENG-S113 IAG 1150 EJ25 2.35L Destroked Subaru Closed Deck Short Block - 1150 BHP

IAG’s 1150 EJ25 2.35L Destroked Closed Deck Short Block is built for power, capable of handling up to 1150 BHP. While still a streetable block, the 1150 is optimized for the track. This hand assembled block is based off of our 1150 short block and features an IAG Spec billet 75mm crankshaft, custom IAG Spec +2mm Tri-beam forged connecting rods and ARP 625+ rod bolts. Also included in the assembly are JE 99.75mm FSR 2618 custom pistons that have been treated with electroless nickel-plating, creating a hard-wearing surface that offers detonation resistance and heat reflection. This strengthened short block, combined with a billet crank, race bearings, along with forged connecting rods and pistons delivers a rock-solid foundation that is able to endure intense engine loads generated by large turbochargers and high-powered racing conditions, including competition drag racing. With custom IAG Spec +2mm Tri-beam forged connecting rods and IAG Spec billet 75mm crankshaft, IAG’s Destroked Short Block decreases piston speed, optimizing the rod-to-stroke ratio. This adjustment enhances key engine dynamics such as aspiration and combustion efficiency, while minimizing component wear. In terms of performance, this means increased power output, extended ring life, and the ability to rev higher—making this short block an ideal choice for track days, racing, or competition drag racing applications. Our recommended maximum rev limit is 9000 rpm for these short blocks.

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
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
2012	Subaru	WRX	STI
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