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1250cc Conversion Kit

S&S CYCLE

1250cc Conversion Kit

$978.95

-

Cylinder Kit

In Stock
Add to wishlist
Part Number: 0931-0529 . 910-0690 Categories:
Ships FREE to USA
Earn Up to 5%ZillaCash
Guaranteed Low Price
Military and First Responder Discount
Part Note: Please note these will NOT work on a XR1200.
S&S CYCLE
  • 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.
Brand: S&S CYCLE
SKU: 0931-0529 . 910-0690
Part Number: 09310529
Categories: Top End > Engine, Top End > Category Tree v2.0, Top End > Parts
Name: 1250 cc Conversion Kit
Weight 22.95 lbs
Dimensions 19.85 × 9.19 × 8.33 in
Color/Finish

Silver
Compression Ratio Imperial

11.2:1
Material

Iron
Product Name

Cylinder Kit
Type

Domed
Units

Kit
Bore Size Imperial

3.562"
Displacement

1250 cc
Riding Style

Street
Stroke Length Imperial

3-13/16"
Style

Big Bore

Brand

S&S CYCLE

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Cylinder Kit

Fitments

Year Make Model
2002 - 2019 Harley-Davidson 1200 Custom EFI XLC
1996 - 2006 Harley-Davidson 1200 Custom XLC
2006 - 2011 Harley-Davidson 1200 Low EFI XLL
2006 Harley-Davidson 1200 Low XLL
2007 - 2012 Harley-Davidson 1200 Nightster XLN
2006 - 2008 Harley-Davidson 1200 Roadster EFI XLR
2016 - 2020 Harley-Davidson 1200 Roadster XLCX
2004 - 2006 Harley-Davidson 1200 Roadster XLR
1996 - 2003 Harley-Davidson 1200 Sport XLS
2002 - 2017 Harley-Davidson 1200 XLCP
1999 - 2009 Harley-Davidson 883 Custom EFI XLC
1998 - 2006 Harley-Davidson 883 Custom XLC
1986 - 1995 Harley-Davidson 883 Deluxe XLH
2007 - 2009 Harley-Davidson 883 EFI XL
1987 - 2003 Harley-Davidson 883 Hugger XLH
2006 - 2010 Harley-Davidson 883 Low EFI XLL
2005 - 2006 Harley-Davidson 883 Low XLL
2002 - 2007 Harley-Davidson 883 Roadster EFI XLR
2002 - 2007 Harley-Davidson 883 Roadster XLR
2011 - 2019 Harley-Davidson 883 SuperLow XLL
2004 - 2006 Harley-Davidson 883 XL
2018 - 2019 Harley-Davidson Forty-Eight Special XLXS
2010 - 2022 Harley-Davidson Forty-Eight XLX
2018 - 2021 Harley-Davidson Iron 1200 XLNS
2009 - 2022 Harley-Davidson Iron 883 XLN
1987 - 1994 Harley-Davidson Low Rider Custom FXLR
2012 - 2016 Harley-Davidson Seventy-Two XLV
2018 - 2020 Harley-Davidson Softail Low Rider FXLR
2020 - 2022 Harley-Davidson Softail Low Rider S FXLRS
2022 Harley-Davidson Softail Low Rider ST FXLRST
1986 - 1988 Harley-Davidson Sportster 1100 XLH
2007 Harley-Davidson Sportster 1200 XL 50
1988 - 2003 Harley-Davidson Sportster 1200 XLH
1986 - 2003 Harley-Davidson Sportster 883 XLH
2014 - 2017 Harley-Davidson SuperLow 1200 XLT
1996 - 2019 Harley-Davidson XL1200C Sportster 1200 Custom
2016 - 2020 Harley-Davidson XL1200CX Roadster
2006 - 2011 Harley-Davidson XL1200L Sportster 1200 Low
2007 - 2012 Harley-Davidson XL1200N Sportster 1200 Nightster
2018 - 2021 Harley-Davidson XL1200NS Iron 1200
2004 - 2008 Harley-Davidson XL1200R Sportster 1200 Roadster
1996 - 2003 Harley-Davidson XL1200S Sportster 1200 Sport
2014 - 2017 Harley-Davidson XL1200T SuperLow 1200T
2012 - 2016 Harley-Davidson XL1200V Seventy-Two
2010 - 2022 Harley-Davidson XL1200X Forty-Eight
2018 - 2019 Harley-Davidson XL1200XS Forty-Eight Special
2007 Harley-Davidson XL50 50th Anniversary Sportster
2004 - 2008 Harley-Davidson XL883 Sportster
1999 - 2009 Harley-Davidson XL883C Sportster 883 Custom
2005 - 2010 Harley-Davidson XL883L Sportster 883 Low
2011 - 2019 Harley-Davidson XL883L SuperLow
2009 - 2022 Harley-Davidson XL883N Iron 883
2002 - 2007 Harley-Davidson XL883R Sportster 883 Roadster
1986 - 1987 Harley-Davidson XLH1100
1988 - 1998 Harley-Davidson XLH1200
1986 - 2001 Harley-Davidson XLH883
1986 - 1995 Harley-Davidson XLH883DLX Sportster 883 Deluxe
1987 - 2003 Harley-Davidson XLH883HUG Sportster 883 Hugger

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer’s information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.

General Safety Warning

Failure to follow manufacturer’s recommendations and requirements can cause product failure resulting in serious injury or death. While effort has been taken in collecting accurate fitment information, LeMans Corporation accepts no liability for loss or damage resulting from errors or omissions. If you believe any of the information provided is erroneous, please email .

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Due to their custom nature, all HPi exhaust system sales are FINAL. MPG cannot accept returns under any circumstances. Due to labor involved, no announced/advertised or military discounts can be applied to We appreciate your understanding.