S&S CYCLE Big Bore Kit, 1250cc, 10.3:1 CR - 910-0689
For ALL 1986-2022 Harley 883cc & 1200cc XL Sportster models
Features:
- Converts 1986-2022 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 pistons - 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
- NOTE: Will not work with XR1200 models.
- NOTE: 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:
- Bore Size: 3.562"
- Displacement: 1250 cc
- Compression Ratio: 10.3:1
- Material: Iron / Aluminum / Cast
- Stroke Length: 3-13/16"
- Type: Flat Top
- Color/Finish: Silver
Finish:
- Silver
Fitment:
- 2018-2021 Harley-Davidson Iron 1200 XLNS
- 2018-2019 Harley-Davidson Forty-Eight Special XLXS
- 2016-2020 Harley-Davidson 1200 Roadster XLCX
- 2014-2017 Harley-Davidson SuperLow 1200 XLT
- 2012-2016 Harley-Davidson Seventy-Two XLV
- 2011-2019 Harley-Davidson 883 SuperLow XLL
- 2010-2022 Harley-Davidson Forty-Eight XLX
- 2009-2022 Harley-Davidson Iron 883 XLN
- 2007-2012 Harley-Davidson 1200 Nightster XLN
- 2007-2009 Harley-Davidson 883 EFI XL
- 2007 Harley-Davidson Sportster 1200 XL 50
- 2006-2011 Harley-Davidson 1200 Low EFI XLL
- 2006-2010 Harley-Davidson 883 Low EFI XLL
- 2006-2008 Harley-Davidson 1200 Roadster EFI XLR
- 2006 Harley-Davidson 1200 Low XLL
- 2005-2006 Harley-Davidson 883 Low XLL
- 2004-2006 Harley-Davidson 883 XL
- 2004-2006 Harley-Davidson 1200 Roadster XLR
- 2002-2019 Harley-Davidson 1200 Custom EFI XLC
- 2002-2003, 2011-2017 Harley-Davidson 1200 XLCP
- 2002-2003, 2005-2007 Harley-Davidson 883 Roadster XLR
- 2002-2003, 2005-2007 Harley-Davidson 883 Roadster EFI XLR
- 1999-2009 Harley-Davidson 883 Custom EFI XLC
- 1998-2006 Harley-Davidson 883 Custom XLC
- 1996-2006 Harley-Davidson 1200 Custom XLC
- 1996-2003 Harley-Davidson 1200 Sport XLS
- 1988-2003 Harley-Davidson Sportster 1200 XLH
- 1987-2003 Harley-Davidson 883 Hugger XLH
- 1986-2003 Harley-Davidson Sportster 883 XLH
- 1986-1995 Harley-Davidson 883 Deluxe XLH
- 1986-1988 Harley-Davidson Sportster 1100 XLH
