{"product_id":"stage-2-5-international-hybrid-ej25-closed-deck-short-block-1","title":"Stage 2.5 International Hybrid EJ25 Closed Deck Short Block","description":"The IAG Performance Stage 2.5 International Hybrid EJ25 Subaru Closed Deck Short Block is meticulously crafted for enthusiasts seeking to enhance the displacement and low-end torque of their EJ20-equipped vehicles. This hybrid block allows for increased capacity without the need for modifying EJ20 cylinder head chambers, thanks to its specially designed pistons that manage compression.\n\nConstruction begins with new Subaru 2.5L engine case halves, which are precisely CNC machined and fitted with IAG's robust CLOSED Deck Inserts to create a solid deck structure. These inserts incorporate small passages to maintain essential coolant flow. The block is then Deck Plate bored and honed to 99.75mm using an in-house Sunnen SV-30, enabling custom piston-to-wall clearances tailored to specific needs.\n\nAssembly involves a new 2017+ Subaru 2.5L nitride-treated STI crankshaft paired with ACL or King race main bearings. IAG-Spec Tuff H-Beam connecting rods, secured by ARP rod bolts, are used with matching ACL or King race rod bearings. The case halves are sealed with new OEM main\/case bolts and sealant. The build is completed with IAG-Spec 99.75mm JE FSR 2618 Forged Pistons featuring .210\" steel wrist pins, offering superior durability and performance capabilities.","brand":"IAG Performance","offers":[{"title":"Default Title","offer_id":52688780558648,"sku":"IAG-ENG-1252.IH","price":4899.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/662669711.webp?v=1784895773","url":"https:\/\/store.motormia.co\/products\/stage-2-5-international-hybrid-ej25-closed-deck-short-block-1","provider":"MOTORMIA","version":"1.0","type":"link"}