1200cc XL cylinder and piston conversion kit. Two black finished cylinders with milled edge fins. Fitted Sifton moly 9.5:1 reverse dome pistons. 883 Heads Must be used!The item "883 to 1200 Black Cylinder 9.51 Piston Big Bore Conversion Kit Harley Sportster" is in sale since Tuesday, September 8, 2015. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Big Bore & Top End Kits". The seller is "americanclassicmotors" and is located in Zieglerville, Pennsylvania. This item can be shipped worldwide.