1250 cc Conversion Kit

  • 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 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
  • 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.


  • € 1.116,30 incl. VAT

    In stock

    Expected delivery time: 2-4 working days
    We prepare your vehicle for the road
    Large assortment
    Specialized in recreational vehicles
    1250 cc Conversion Kit

  • 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 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
  • 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.


  • Article number
    09310526:910-0691
    Bore Size
    3,562"
    Bore Size Imperial
    3.562"
    Color/Finish
    Black
    Compression Ratio
    10,3:1
    Compression Ratio Imperial
    10.3:1
    Displacement
    1250 cc
    Material
    Aluminum| Cast| Iron
    Product Name
    Cylinder Kit
    Research Value
    Finalized
    Riding Style
    Street
    Stroke Length
    3-13/16"
    Stroke Length Imperial
    3-13/16"
    Style
    Big Bore
    Type
    Flat Top
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    Why QFF?

    Specializing in recreational vehicles

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    Specializing in recreational vehicles

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