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S&S Cycle Replacement Piston Kit

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Everyday Low Price: $321.99

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J&P Part: 431-866

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This product was proudly made in the USA Made In The USA

S&S Cycle Replacement Piston Kit

Fitment Note: Fits S&S 100" and 107" motors with 4" bore.

• S&S pistons are designed with maximum piston/engine life and performance in mind

• Features include offset wrist pin to reduce piston slap and noise

• Piston-to-piston clearance at the bottom of the stroke is concentrated in the rear piston so a longer piston skirt can be maintained on the most critical area - the rear of both pistons

• Forged pistons for 1936-99 Big Twins with stock, longer 3-5/8″ big bore cylinders, strokes from 3-31/32″ (stock 74″) to 4-3/4″ and 4-5/8″ stroke S&S Sidewinders

• Each piston includes rings, wrist pin and wrist pin keepers

Product Specs

  • Cylinder Bore Size: 4″ bore
  • Dimension Oversize: +.020″
  • Manufacturer Part Number: 92-1402
  • Material Processing Method: Forged
  • Piston Bore Size: 3-5/8″
  • Sold in Units: Pair
  • Style: Flat Top


Fitment Note: Fits S&S 100" and 107" motors with 4" bore.

Note: This item is a universal/custom fit component, and does not have any direct standard/OEM model application. Some items may require modification and an advanced level of mechanical skill and/or knowledge for installation.

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