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Screamin' Eagle 4.155 In. Big Bore Bolt-On Cylinders

$924.95
5.00
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See 1 reviews
Part Number: 16800330
Color: Black Highlighted
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Increase the displacement of your Milwaukee-Eight engine without removing the engine from the chassis. The Screamin’ Eagle product team has engineered a patent protected 4.155” Big Bore Cylinder that increases the internal bore but slips into the existing case bore without modification. When combined with the appropriate piston and flywheel combination in the Screamin’ Eagle Stage IV kits, these cylinders can increase the displacement of your Milwaukee-Eight engine from 107CI to 119CI or from 114CI & 117CI to 122CI.

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  • FEATURED REVIEW
    12/24/2023
    High Quality power
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    Quality
    Did Not Meet
    Exceeded
    Used these jugs and HD matching pistons for the quality and not wanting after market logo engraved on jugs. Paired them with a Rocket 474 cam
    • User review image
    • User review image
    Linetrash - Virginia
    • Keeping it HD is a nice touch.
      Elwin4 - Olivehurst, CA
      2/21/2025
    • Thanks for putting up the Dyno sheet, those are some really good numbers. Definitely putting these on my bucket list.
      Alstons World - Atlanta, Ga
      12/23/2024
Showing 1-3 of 3
Q&A
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  • Question:
    1/6/2025
    Are these cylinders Black with highlights or Black Granite?
    Wayne - Texas
    • Answer:
      Hello Wayne, Cylinders in Kit 16800330 are black with highlights. Thanks blairmke
  • Question:
    7/12/2023
    Want to know if we can bolt 117 cylinders onto a 107.
    Butch - Medicine Hat AB Canada
    • Answer:
      I know this is old, but (Mouth) are these the cylinders they put on the early model Stg3 in 2018 going 107 to 114? My flywheel just took out my frt piston, at Harley, installing SE Orange oil pump
      • Answer:
        Yes it was the very first stage III kit Harley offered. It will make a 107 a 114 big bore. You will need to get 11:1 compression ratio pistons though
      • Answer:
        Short answer, no. They will bolt on, but will not run. 114
  • Question:
    6/2/2023
    How the heck does this work?
    Chris - Fresno, CA
    • Answer:
      Hello Chris, Screamin' Eagle 4.155 In. Big Bore Bolt-On Cylinders when combined with the appropriate piston and flywheel combination in the Screamin’ Eagle Stage IV kits, these cylinders can increase the displacement of your Milwaukee-Eight engine from 107CI to 119CI or from 114CI & 117CI to 122CI. Thanks blairmke read more.

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Screamin' Eagle 4.155 In. Big Bore Bolt-On Cylinders