This kit converts 1986-'21 883cc and 1200cc HD Sportster models to 1250cc displacement. No machining or rebalancing is required. Kit contains forged flat topped 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 upgrades are recommended.

This Part Fits:

Year	Make	Model	Submodel
2012-2016	Harley-Davidson	XL1200V Seventy-Two	Base
2010-2020	Harley-Davidson	XL1200X Forty-Eight	Base
2012-2019	Harley-Davidson	XL883L SuperLow	Base
2009-2020	Harley-Davidson	XL883N Iron 883	Base
1986-1987	Harley-Davidson	XLH1100	Base
1988-2003	Harley-Davidson	XLH1200	Base
1986-2004	Harley-Davidson	XLH883	Base