S&S CYCLE 1250cc Conversion Kit for '86-'21 HD® Sportster® Models - Wrinkle Black Finish - 910-0691

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 kit is not compatible with XR1200 models*

• Kit includes S&S 1250cc pistons with rings and wristpins, S&S 3-9/16" bore cylinders, MLS head, base and exhaust gaskets, assembly lube and instructions
• 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
• Made in the U.S.A.
• 883 models will require the use of XL1200 cylinder heads to achieve correct compression ratios.
• Will not work with XR1200 models.
  
  NOTE: Please note these will NOT work on a XR1200.
  

Specs