These S&S 1250cc conversion pistons for 1986-'21 HD® Sportster® Models increase the displacement of 883cc and 1200cc engines to 1250cc at 10.3:1 compression. May be used with stock 1200cc cylinder heads, but S&S CNC ported heads are recommended. Stock 1200cc cylinders and 1986-'2003 883cc cylinders may be bored to accept the 3-9/16" bore 1250cc pistons, but 2004-'16 883cc cylinders may not be used. Also available in a cylinder and piston kit.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2016 | Harley-Davidson | XL1200C Sportster 1200 Custom | Base |
| 2011 | Harley-Davidson | XL1200N Sportster 1200 Nightster | Base |
| 2015-2016 | Harley-Davidson | XL1200T SuperLow 1200T | Base |
| 2004-2008 | Harley-Davidson | XL883 Sportster | Base |
| 2015-2016 | Harley-Davidson | XL883N Iron 883 | Base |
| 1986-1987 | Harley-Davidson | XLH1100 | Base |
| 1988-1990 | Harley-Davidson | XLH1200 | Base |
| 1986-1990 | Harley-Davidson | XLH883 | Base |
