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Screamin' Eagle High Compression Piston - 4.310" Bore x 4.375" Stroke

Part Number 21900101

FINAL SALE, NON-RETURNABLE

Quantity:

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Developed to work in concert with the Screamin’ Eagle® Milwaukee-Eight® 128CI Stage IV kits, these pistons increase the engine’s compression and deliver impressive gains in torque and horsepower when coupled with those kits.

  • 4.310" Bore x 4.375" Stroke
  • Replacement pistons for 17-later Milwaukee-Eight® models equipped with 128CI Stage IV kits
  • Forged from high-strength aluminum
  • Precision-machined and features coated skirts for a tight-tolerance fit and quieter operation
  • Complete kit includes two pistons, rings, wrist pins and clips
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  • These Screamin' Eagle® products are 50-State U.S. EPA compliant for sale and use on all applicable vehicles, including those that are pollution controlled. See Genuine Motor Parts and Accessories or Screamin' Eagle Accessories catalog for fitment information. Screamin' Eagle Performance products are intended for the experienced rider only.
  • Warranty

    1 year limited warranty – Go to www.h-d.com/warranty for full details
  • Requires ECM Calibration

    Yes
  • Sold in Unit

    Pair
  • In The Box

    Two pistons, rings, wrist pins, clips and installation instructions
  • Upgrade Stage Level

    Stage IV

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    Prices listed are generally the Manufacturer's Suggested Retail Price (MSRP), excluding taxes and shipping. Prices at local dealerships may vary. All online orders will be fulfilled and shipped by
    Harley-Davidson Motor Company as the agent for the Selling Dealer.