S&S Cycle 1250 cc Conversion Kit - 10.3:1 Compression Ratio - Wrinkle Black - XL

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Features Converts '86-'21 883 cc and 1200 cc Sportster models to 1250 cc displacement Forged pistons have larger than stock valve pockets and accepts up to 2.00" valves Forged pist ons - coated piston skirts with measurement window and S&S logo No machining or rebalancing is required Kit includes S&S 1250 cc pistons with rings and wristpins, S&S 3-9/16" bore cylinders, MLS (Multi-Layer Steel) head, base and exhaust gaskets, assembly lube and instructions Made in the USA Will not work with XR1200 models. 883 models will require the use of XL1200 cylinder heads to achieve correct compression ratios. For the best performance CNC head porting, performance cams, exhaust and intake upgrades are recommended. Specs Product Name Cylinder Kit Type Flat Top Style Big Bore Color/Finish Black Material Iron / Cast / Aluminum Bore Size 3.562" Displacement 1250 cc Stroke Length 3-13/16" Compression Ratio 10.3:1 Units Kit Riding Style Street FITMENTS: 2018-2021 Harley-Davidson XL1200NS Iron 1200 - - 2018-2019 Harley-Davidson XL1200XS Forty-Eight Special - - 2016-2020 Harley-Davidson XL1200CX Roadster - - 2014-2017 Harley-Davidson XL1200T SuperLow 1200T - - 2012-2016 Harley-Davidson XL1200V Seventy-Two - - 2011-2019 Harley-Davidson XL883L SuperLow - - 2010-2022 Harley-Davidson XL1200X Forty-Eight - - 2009-2022 Harley-Davidson XL883N Iron 883 - - 2009 Harley-Davidson 883 EFI XL - - 2007-2012 Harley-Davidson XL1200N Sportster 1200 Nightster - - 2007 Harley-Davidson XL50 50th Anniversary Sportster - - 2007 Harley-Davidson 883 Roadster XLR - - 2006-2011 Harley-Davidson XL1200L Sportster 1200 Low - - 2006 Harley-Davidson 883 Low EFI XLL - - 2006 Harley-Davidson 1200 Low EFI XLL - - 2006 Harley-Davidson 1200 Roadster EFI XLR - - 2005-2010 Harley-Davidson XL883L Sportster 883 Low - - 2004-2008 Harley-Davidson XL883 Sportster - - 2004-2008 Harley-Davidson XL1200R Sportster 1200 Roadster - - 2002-2006 Harley-Davidson 1200 Custom EFI XLC - - 2002-2003, 2011-2017 Harley-Davidson 1200 XLCP - - 2002-2003, 2005-2007 Harley-Davidson XL883R Sportster 883 Roadster - - 2002-2003, 2005-2006 Harley-Davidson 883 Roadster EFI XLR - - 1999-2009 Harley-Davidson XL883C Sportster 883 Custom - - 1999-2006 Harley-Davidson 883 Custom EFI XLC - - 1999-2003 Harley-Davidson Sportster 1200 XLH - - 1998 Harley-Davidson 883 Custom XLC - - 1996-2019 Harley-Davidson XL1200C Sportster 1200 Custom - - 1996-2003 Harley-Davidson XL1200S Sportster 1200 Sport - - 1988-1998 Harley-Davidson XLH1200 - - 1988 Harley-Davidson Sportster 1100 XLH - - 1987-1998, 2002-2003 Harley-Davidson XLH883HUG Sportster 883 Hugger - - 1987, 1989-2003 Harley-Davidson Sportster 883 XLH - - 1986-1995 Harley-Davidson XLH883DLX Sportster 883 Deluxe - - 1986-1987 Harley-Davidson XLH1100 - - 1986, 1988, 1999-2001 Harley-Davidson XLH883 Show more