{"product_id":"iag-stage-4-extreme-2-5l-subaru-closed-deck-short-block","title":"IAG Stage 4 EXTREME 2.5L Subaru Closed Deck Short Block","description":"The IAG Stage 4 EXTREME 2.5L Subaru Closed Deck Short Block is engineered for high-powered street cars and purpose-built race cars, designed to withstand significantly more boost and power output than a stock engine.\n\nThis professionally built and assembled short block starts with brand new Subaru 2.5L OEM case halves that are converted to a closed deck configuration using IAG's inserts. The block is then meticulously machined to accept 14mm head studs and features IAG's revolutionary Fire-Lock receiver groove machining for enhanced sealing with IAG Fire-Lock Head Gaskets, crucial for high boost applications.\n\nInternally, the short block is equipped with IAG-Spec JE FSR 99.75mm 2618 forged pistons, .250″ \/ .927″ H13 performance wrist pins and clips, IAG Spec Tri-Beam connecting rods secured by ARP625+ rod bolts, and ACL rod and main bearings. A Manley Billet Turbo Tuff Crankshaft and ARP Main Case Bolts complete the rotating assembly. The displacement is 2.5L with a bore size of 99.75mm.\n\nIt is important to note that the final compression ratio is dependent on the cylinder heads used. With B, V, and W cylinder heads (EJ257), the compression ratio is 8.2:1, while D cylinder heads (EJ255) result in an 8.5:1 ratio. This short block has a power output rating of 1100 Bhp. The product requires separate purchase of head studs and IAG Fire-Lock Head Gaskets for proper installation and operation.","brand":"IAG Performance","offers":[{"title":"Default Title","offer_id":52686853046584,"sku":"IAG-ENG-1453","price":8799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/662147454.webp?v=1784877525","url":"https:\/\/store.motormia.co\/products\/iag-stage-4-extreme-2-5l-subaru-closed-deck-short-block","provider":"MOTORMIA","version":"1.0","type":"link"}