This kit converts 1200cc HD Sportster models to 1250cc displacement. No machining or rebalancing is required. Forged pistons have larger than stock valve pockets and accept up to 2.00" valves. 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.
- Forged pistons - coated piston skirts with measurement window and S & S logo
- Forged pistons have larger than stock valve pockets and accepts up to 2.00" valves
- 10.3:1 compression ratio
- Available in silver powder coat or wrinkle black powder coat finish
- Kit includes S & S 1250cc pistons with rings and wristpins, S & S 39/16" bore cylinders, MLS head, base and exhaust gaskets, assembly lube and instructions
- Made in the U.S.A.
- MFG Part # 910-0443
| YEAR | MAKE | MODEL |
|---|---|---|
| 2014 - 2017 | Harley-Davidson | Superlow - XL 1200T |
| 1996 - 2006 | Harley-Davidson | XL 1200C Custom |
| 2007 - 2017 | Harley-Davidson | XL 1200C Custom (EFI) |
| 2016 - 2017 | Harley-Davidson | XL 1200CX Roadster |
| 2006 | Harley-Davidson | XL 1200L Low |
| 2007 - 2011 | Harley-Davidson | XL 1200L Low (EFI) |
| 2007 - 2012 | Harley-Davidson | XL 1200N Nightster |
| 2004 - 2006 | Harley-Davidson | XL 1200R Roadster |
| 2007 - 2008 | Harley-Davidson | XL 1200R Roadster (EFI) |
| 1996 - 2003 | Harley-Davidson | XL 1200S Sport |
| 2012 - 2016 | Harley-Davidson | XL 1200V Seventy-Two |
| 2010 - 2017 | Harley-Davidson | XL 1200X Forty-Eight |
| 2004 - 2006 | Harley-Davidson | XL 883 |
| 2007 - 2008 | Harley-Davidson | XL 883 (EFI) |
| 1999 - 2006 | Harley-Davidson | XL 883C Custom |
| 2007 - 2009 | Harley-Davidson | XL 883C Custom (EFI) |
| 2005 - 2006 | Harley-Davidson | XL 883L Low |
| 2007 - 2010 | Harley-Davidson | XL 883L Low (EFI) |
| 2011 - 2017 | Harley-Davidson | XL 883L Superlow |
| 2009 - 2017 | Harley-Davidson | XL 883N Iron |
| 2002 - 2003 | Harley-Davidson | XL 883R |
| 2005 - 2006 | Harley-Davidson | XL 883R |
| 2007 | Harley-Davidson | XL 883R (EFI) |
| 2007 | Harley-Davidson | XL50 50th Anniversary (EFI) |
| 1986 - 1987 | Harley-Davidson | XLH 1100 |
| 1988 - 2003 | Harley-Davidson | XLH 1200 |
| 1986 - 2003 | Harley-Davidson | XLH 883 |
| 1986 - 1995 | Harley-Davidson | XLH 883 Deluxe |
| 1987 - 2003 | Harley-Davidson | XLH 883 Hugger |
