1250cc Conversion Kit for 1986-2021 HD® Sportster® Models High Compression - Wrinkle Black FinishThis kit converts 1986 '21 883cc and 1200cc HD Sportster models to 1250cc displacement. No machining or rebalancing is required. Kit contains forged 5cc pop up 3 9 16" bore pistons with coated piston skirts, S&S 3 9 16" bore cylinders, MLS head gaskets, base gaskets, exhaust gaskets, assembly lube, and instructions. 883 cylinder heads may not be used with this kit. For the best performance CNC head porting, performance cams, exhaust and intake
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1250cc Conversion Kit for 1986-2021 HD® Sportster® Models High Compression - Wrinkle Black Finish