{"product_id":"iag-performance-crest-cnc-stage-x-billet-aluminum-ej25-subaru-short-block-2002-2014-wrx-2004-2021-sti-2005-2009-lgt-2004-2013-fxt","title":"IAG Performance \/ Crest CNC Stage X Billet EJ25 Subaru Short Block 2002-2014 WRX \/ 2004-2021 STI \/ 2005-2009 LGT \/ 2004-2013 FXT","description":"\u003cdiv id=\"s-3993f77e-e183-4e07-abb6-a74ae22c116c\" class=\"shg-c\"\u003e\n\u003cdiv class=\"shg-row\" data-col-grid-mode-on=\"\"\u003e\n\u003cdiv class=\"shg-c-lg-6 shg-c-md-6 shg-c-sm-6 shg-c-xs-12\"\u003e\n\u003cdiv id=\"s-6643f63c-874e-4798-99b3-7e645902fd50\" class=\"shg-c\"\u003e\n\u003cdiv class=\"shg-rich-text shg-theme-text-content\"\u003e\n\u003cp data-end=\"817\" data-start=\"205\"\u003eThe IAG Performance \/ Crest CNC 2.5L Billet Aluminum Short Block is engineered to redefine Subaru performance tuning by addressing virtually every limitation of the EJ platform in high-power builds. The Stage X Billet Short Block eliminates case flex in high-output EJ engines, allowing reliable operation at power levels exceeding 1,150 BHP. It features radiused coolant and oil galleries for improved flow, a 4-bolt bottom end for added strength, and replaceable iron sleeves for easier rebuilds. For enthusiasts seeking uncompromising power and reliability, the Stage X short block is the ultimate solution.\u003c\/p\u003e\n\u003cp data-end=\"1189\" data-start=\"819\"\u003e\u003cstrong data-end=\"859\" data-start=\"819\"\u003eBuilt on a Proven Crest CNC Platform\u003c\/strong\u003e\u003cbr data-end=\"862\" data-start=\"859\"\u003eThe Stage X Short Block is built on Crest CNC’s billet aluminum platform (formerly Willall), renowned for precision machining and high-output durability. By combining Crest’s expertise with IAG’s experience in high-power Subaru builds, this short block delivers an exceptional foundation for extreme performance applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eIAG Performance \/ Crest CNC Stage X 2.5L Billet Aluminum Short Block Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"shg-c-lg-6 shg-c-md-6 shg-c-sm-6 shg-c-xs-12\"\u003e\n\u003cdiv id=\"s-062c2e7e-c455-4d50-8a8e-a7f55975d15a\" class=\"shg-c\"\u003e\n\u003cdiv class=\"shg-rich-text shg-theme-text-content\"\u003e\n\u003cdiv id=\"s-679cc972-214e-4911-b4fc-5fe283630966\" class=\"shg-c\"\u003e\n\u003cdiv class=\"shg-row\" data-col-grid-mode-on=\"\"\u003e\n\u003cdiv class=\"shg-c-lg-6 shg-c-md-6 shg-c-sm-6 shg-c-xs-12\"\u003e\n\u003cdiv id=\"s-4d87c7d4-0fb8-41c8-af50-6a9b7a42a6bc\" class=\"shg-c\"\u003e\n\u003cdiv class=\"shg-rich-text shg-theme-text-content\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Halves -\u003c\/strong\u003eCrest Billet \/ Sleeved Case Halves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePinned Mains -\u003c\/strong\u003eMachine case for 9.5mm pinned mains and lined honed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire-Lock -\u003c\/strong\u003eIAG Fire-Lock™ receiver groove machining, latest solution to prevent head gasket failure on high horsepower and high boost Subaru's - *IAG Fire-Lock™ head gaskets required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachining -\u003c\/strong\u003eMachined for 14mm Head Studs *(Studs sold separately \/ Note the proper head gaskets or head gasket modifications are required for proper fitment with 14mm studs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePistons -\u003c\/strong\u003eJE 99.5mm FSR 2618 custom forged pistons, JE Pro Seal Ring Set, .250\" H13 .927\" tool steel wrist pins, Clips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnecting Rods -\u003c\/strong\u003eCustom IAG-Spec +2mm Tri-Beam Forged Connecting Rods with ARP 625+ Rod Bolts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRod \/ Main Bearings -\u003c\/strong\u003eACL Race Bearings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank -\u003c\/strong\u003eIAG-Spec Billet 79mm Crankshaft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase \/ Main Bolts -\u003c\/strong\u003eARP Case Bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompression Ratio:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8.5:1 on D Cylinder Heads (EJ255)\u003c\/li\u003e\n\u003cli\u003e8.2:1 on B, V and W EJ257 Heads with standard thickness gasket.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHead Gasket Required:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e*IAG Fire-Lock .051\" Head Gaskets with IAG-Spec Alloy Ring Set* PN# IAG-ENG-1741\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"s-3cc5fac8-eeaf-426c-a575-5668dc792ea6\" class=\"shg-c\"\u003e\n\u003cdiv class=\"shg-row\" data-col-grid-mode-on=\"\"\u003e\n\u003cdiv class=\"shg-c-lg-6 shg-c-md-6 shg-c-sm-6 shg-c-xs-12\"\u003e\n\u003cdiv id=\"s-42993bed-bb90-4f9b-b313-dc3de9e5eaf9\" class=\"shg-c shg-align-center\"\u003e\n\u003cdiv class=\"shogun-heading-component\" data-animations='[{\"event\":\"enterviewport\",\"name\":\"fadeInLeft\",\"delay\":\"\",\"duration\":\"\",\"iterationCount\":\"\",\"shouldBeTriggeredOnce\":false}]'\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"IAG Performance","offers":[{"title":"Default Title","offer_id":51766138372418,"sku":"IAG-ENG-SX25","price":17999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9294\/3170\/files\/iag-performance-crest-cnc-stage-x-billet-ej25-subaru-short-block-2002-2014-wrx-2004-2021-sti-2005-2009-lgt-2004-2013-fxt-iag-eng-sx25-834936.jpg?v=1767563083","url":"https:\/\/autospecdesign.com\/products\/iag-performance-crest-cnc-stage-x-billet-aluminum-ej25-subaru-short-block-2002-2014-wrx-2004-2021-sti-2005-2009-lgt-2004-2013-fxt","provider":"AutoSpec Design","version":"1.0","type":"link"}