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S&S Cycle Silver Cylinder and Piston Conversion Kit

J&P Cycles Part Number: 633-656

Manufacturer Part Number: 910-0301


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Description for S&S Cycle Silver Cylinder and Piston Conversion Kit

• Convert 883cc Sportster models to 1200cc

• No need to balance since these pistons weigh the same as stock 883 pistons

• Cylinder head modification is also not needed

• The dished piston dome keeps compression down to a streetable 9.4:1 with stock 883cc heads

• Installing this kit takes the same time as replacing a stock top end

• Kit contains S&S Cycle 833-1200cc conversion pistons with rings and wristpins, S&S Cycle 3-1/2″ bore cylinders, cylinder head, base and exhaust gaskets, assembly lube and instructions

Note: The cylinder fin profile does not perfectly match the fins on 2004 and later stock heads, but the difference is not considered to be objectionable.

Note: S&S Cycle does not recommend boring 2004 and later 883cc cylinders from 3″ to 3-1/2″ bore to increase engine displacement to 1200cc due to the large taper on the bottom of the cylinder spigot. New cylinders are recommended.

Product Specs

Product Specs for S&S Cycle Silver Cylinder and Piston Conversion Kit

Compression Ratio:
Cylinder Bore Size:
Manufacturer Part Number:
Sold in Units:
Warehouse Part Number:
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Compatible Models

Harley-Davidson® Models

  • Sportster 1200 50th Anniversary XL50 : 2007
  • Sportster 883 Custom XL883C : 2004–2010
  • Sportster 883 Custom XLH883C : 1999–2003
  • Sportster 883 Deluxe XLH883 : 1988–1995
  • Sportster 883 Hugger XLH883 : 1988–2003
  • Sportster 883 Iron XL883N : 2010–2016
  • Sportster 883 Low XL883L : 2005–2010
  • Sportster 883 Roadster XL883R : 2006–2015
  • Sportster 883 Roadster XLH883R : 2003
  • Sportster 883 Standard XL883 : 2005–2009
  • Sportster 883 Standard XLH883 : 1987–1991, 1993–2003
  • Sportster 883 SuperLow XL883L : 2011–2016
Customer Reviews

Customer Reviews for S&S Cycle Silver Cylinder and Piston Conversion Kit

Overall Rating

5 out of 5 stars (based on 3 reviews)

5 stars (3)

4 stars (0)

3 stars (0)

2 stars (0)

1 star (0)

0 stars (0)


S&S. Quality stuff


Still in the break in period, will see after10,000 miles. The insulation was easy, good information on the break in. Can't wait to get on the road and open it up again.


Got kit ran mic through cylinder ready to go. Great kit

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Additional oversized shipping charges will be applied for expedited shipments within the contiguous U.S. Shipping charges outside the contiguous U.S. are calculated by weight and dimension during checkout.

Pickup in our Retail Stores
Out of Stock in Retail Center Anamosa, IA
Out of Stock in Retail Center Daytona, FL
Out of Stock in Retail Center Sturgis, SD

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