IAG 750 EJ25 Closed Deck Case Halves (11mm H.S.M.) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013 Add 99.75mm Bore & Hone? (Pistons must be provided):No Thank You 5 - 5x127 - ET30

5 - 5x127 - ET30 - Deep - 71

high-grade titanium for the entire system and features megaphone-shaped tailpipes

Year Make Model Submodel 2011-2015

which results in a reduction of outlet temperatures by 21-degrees F over stock

and the high-revving

IAG 750 EJ25 Closed Deck Case Halves (11mm H.S.M.) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013 Add 99.75mm Bore & Hone? (Pistons must be provided):No Thank You 5 - 5x127 - ET30IAG 750 EJ25 CLOSED DECK CASE PLANNING TO BUILD YOUR OWN ENGINE? START HERE It's no secret that the OEM Subaru case halves, or "block," aren't exactly the strongest. IAG has developed a process to greatly improve the strength of the OEM Subaru EJ25 Case Halves to combat the effects of high cylinder pressures brought on by increased power and boost. Our proprietary "Closed Deck" System works by supporting the top of the cylinder in the weakest areas