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S&S Pistons Evo Sportster Conversion 883cc-1200cc

An easy and economic way to increase displacement of 883 and 1100 Evo Sportster models to 1200cc. This kit with 3-1/2” bore forged pistons only requires to bore the stock cylinders from 3 inch to 3-1/2 bore, or purchase new 3-1/2 inch bore cylinders. No combustion chamber modifications or flywheel rebalancing is necessary. Compression ratio will be a very streetable 9.5:1. The piston skirts are coated for reduced friction during break-in.

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For 2004 and up models we recommend buying new S&S cylinders with 3-1/2” bore.
Pistons by S&S; fits Sportster 883 Evolution 1986→ and S&S Conversion Kits; Conversion 883ccm→1200ccm; nominal bore: 3-1/2 ”; 74 in³; compression: 9.5:1; with rings, wristpins, and clips
W&W# Picture net price* Available from warehouse Germany?
63-450 S&S Pistons Evo Sportster Conversion 883cc-1200cc Over-/Undersize: +0.000 ” $431.68 kit
in stock
63-452 S&S Pistons Evo Sportster Conversion 883cc-1200cc Over-/Undersize: +0.010 ” $431.68 kit
in stock
63-453 S&S Pistons Evo Sportster Conversion 883cc-1200cc Over-/Undersize: +0.020 ” $431.68 kit
in stock
Related:
64-025 S&S Pistons Evo Sportster Conversion 883cc-1200cc Cylinder pair by S&S; fits Evolution Sportster 1200; aluminum, bare; nominal bore: 3-1/2 ”; inner Ø: 88.7 mm; USA; gross weight: 10.4 kg $712.25 pair
in stock
64-039 S&S Pistons Evo Sportster Conversion 883cc-1200cc Cylinder; fits Evo Sportster 1200cc 1988-2003; front or rear; aluminum, cast finish; nominal bore: 3-1/2 ”; inner Ø: 88.88 mm; replaces OEM 16447-88; gross weight: 3.1 kg $270.93 each
in stock
* United States of America: Tax free shipping. Please check your local import fees.

Accessories:

  • 55-101

    55-101 Gasket kit by James Gaskets; for Top end; fits Evo Sportster 883 and 1200 1986-1990; nominal bore: 3 ” / 3-1/2 ”; replaces OEM 17032-86; USA; gross weight: 260 ...

  • 55-114

    55-114 Gasket kit by James Gaskets; for Top end; fits Sportster 883/1200 1991-2003; nominal bore: 3 ” / 3-1/2 ”; replaces OEM 17032-91; USA; gross weight: 250 g

See also:

  • S&S 883 → 1200 cc Conversion Kit

    S&S 883 → 1200 cc Conversion Kit Boost any 883cc Harley-Davidson Sportster to 1200cc without hassle. No machine shop, no rebalancing your stock 883cc flywheels, no cylinder head modifications… ...

Have any questions?

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