This is the easiest way to convert your 04-UP Sportster 883 to a 1200. These big bore kits contain everything you need to convert your stock bike, with no head work necessary. Each kit contains 2 pre-fit cylinders with Wiseco 9.5:1 compression pistons and matching piston rings. This kit fits 2004-UP Harley-Davidson Sportsters and features black cast finished cylinders. World Class Tech Support & Customer Service.The item "Sportster 883 to 1200cc Complete Big Bore Kit 04-UP harley cafe racer bobber" is in sale since Thursday, December 7, 2017. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Big Bore & Top End Kits". The seller is "tcbros" and is located in Wauseon, Ohio. This item can be shipped worldwide.