{"product_id":"s-s-cycle-evolution-big-twin-engine-case-with-4-000-bore-part-31-0047","title":"S\u0026S CYCLE Evolution Big Twin Engine Case with 4.000\" Bore - Part 31-0047","description":"Engine Case - +4.000\" Bore - Special Application - Evolution Big Twin\n\u003cp\u003eThe S\u0026amp;S CYCLE 31-0047 engine case is engineered for high-performance Evolution Big Twin motorcycles, offering a custom fit for cylinder bores up to 4.000 inches. Crafted to accommodate larger stroke lengths of up to 5.000 inches, this case features a moved outward cam chest by 0.250 inches, providing enhanced clearance for performance builds. The design ensures optimal oil scavenging with a relocated cam chest oil pickup, which significantly reduces oil carry-over during sustained high-speed riding, promoting engine longevity and reliability. Built in the USA, this case is machined to accept the stock oil filter assembly used on '92-'99 Big Twins, ensuring compatibility with OEM components and ease of maintenance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eHigh-performance design tailored for 4.000-inch bore and long strokes up to 5.000 inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCam chest moved outward by 0.250 inches for increased clearance in performance applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRelocated cam chest oil pickup enhances gear case scavenging and minimizes oil carry-over at high speeds\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMachined to accept OEM oil filter assembly from '92-'99 Big Twins for seamless integration\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePorted breather passageway and machined breather window allow efficient air\/oil mist flow from flywheel cavity to cam chest\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTwo crankcase breathers recommended for engines larger than 95 cubic inches for optimal venting\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDeck height of 5.875 inches designed for durability and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMachined to accommodate a crank position sensor, enabling EFI applications and easy installation of S\u0026amp;S IST Ignition and VFI Fuel Injection systems\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes a plug kit for engines not utilizing a crank position sensor\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eManufactured with a flat case mating surface and alignment dowels, ensuring proper fitment and alignment, with no case interlock groove or ring after June 1, 2008\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":43031885938782,"sku":"09200158","price":1946.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/2545\/7758\/files\/12616.png?v=1784494527","url":"https:\/\/vtwinvisionary.com\/products\/s-s-cycle-evolution-big-twin-engine-case-with-4-000-bore-part-31-0047","provider":"V-TwinVisionary","version":"1.0","type":"link"}