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S&S 1250cc Conversion Kit

(2 reviews)

Item: 356788

$811.13 – $854.96

Select Your Vehicle - Fitment Guaranteed

S&S 1250cc Conversion Kit


  • Forged pistons - coated piston skirts with measurement window and s and s logo
  • Forged pistons have larger then stock valve pockets and accepts up to 2.00 inch(es) valves
  • Available in silver powder coat or wrinkle black powder coat finish
  • Kit includes s and s 1250cc pistons with rings and wristpins, s and s 39/16 inch(es) bore cylinders, mgs head, base and exhaust gaskets, assembly lube and instructions
  • Made in the USA
Specification Details
Bore Varies (make selection above)
CARB Approved No
Color Varies (make selection above)
Compression Ratio Varies (make selection above)
Country of Origin USA

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson
  • XL1200C Sportster 1200 Custom 1996-2019
  • XL1200CX Sportster Roadster 2016-2020
  • XL1200L Sportster 1200 Low 2006-2011
  • XL1200N Sportster 1200 Nightster 2007-2012
  • XL1200NS Sportster 1200 Iron 2018-2021
  • XL1200R Sportster 1200 Roadster 2004-2008
  • XL1200S Sportster 1200 Sport 1996-2003
  • XL1200T Sportster SuperLow 2014-2018
  • XL1200V Sportster Seventy-Two 2012-2016
  • XL1200X Sportster Forty-Eight 2010-2022
  • XL1200XS Sportster Forty-Eight Special 2018-2019
  • XL50 50th Anniversary Sportster 2007
  • XLH1200 Sportster 1200 1988-2003

Customer Reviews

Write Review

S&S = solid build quality

By   on  Verified Purchaser

You cannot go wrong with S&S products. They always engineer top quality Harley components. You could buy similar products for less...but as the saying goes "You get what you pay for". I upgraded my Sportster with another brand of cylinders and pistons some years ago. Now they are both leaking oil and loosing compression. Time to do the job again...except I want top of the line components. S&S gives me that.


1250 Conversion

By   on  Verified Purchaser

Easy to install and excellent power.


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