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Screamin' Eagle Milwaukee-Eight Extreme CNC Ported Cylinder Heads

$1,649.95
5.00
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Part Number: 16500749
Color: Black Granite
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Designed as part of the 128CI and 131CI Screamin’ Eagle Milwaukee-Eight Stage IV Performance Kit, this Second Generation of Extreme Ported Cylinder Heads has been meticulously designed to optimize air/fuel flow and velocity. Improving on the First Generation of CNC-Ported Milwaukee-Eight Cylinder Heads, the Screamin' Eagle team refined the intake and exhaust ports to maximize the flow of high-velocity air through the 1mm larger valves of 128CI and 131CI engines and fully machined the combustion chamber to optimize combustion efficiency.

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  • FEATURED REVIEW
    2/20/2025
    Great product
    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
    Excellent product. Smooth and powerful
    Carmen - Arizona
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Q&A
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  • Question:
    4/27/2025
    Are the "Black Granite" version non-highlighted fins? Just all black??
    Luis - Los Angeles
  • Question:
    12/16/2024
    What CC chambers are these? stock 89 or the 94.
    HD066 - wi
  • Question:
    11/6/2022
    Do you know if installing this changes the compression ratio over the stock heads?
    Ricky G - London, UK
    • Answer:
      Hello Ricky, Not really as the pistons would be needed to change compression. These would help with more air flow etc. Gigglesthehelper
      Gigglesthehelper
      Helpful?
  • Question:
    5/23/2020
    Are the valve spring that come on these heads the same as the Screaming Eagle 18100080? What’s the max lift for these springs?
    DG134 - Los Angeles ca
    • Answer:
      Hello DG134, The valve springs in these cylinder head assemblies work with cams with up to 0.540 in (13.75 mm) lift, and up to 6800 rpm. Screamin' Eagle Performance Valve Spring Kit part Number 18100080 This kit is intended for use with high lift, high RPM applications. This kit will work with lifts up to 13.75 mm (0.540 in) and up to 6500 rpm. The actual valve spring part number is not available. Thanks H9FXE read more.
  • Question:
    2/13/2020
    will these heads work 107 to 114 stage 3.2017 fltrxs
    north reading ma.
    • Answer:
      Hello, Per the Description tab on the product page, Replacement cylinder heads for Air/Oil-Cooled '17-later Milwaukee-Eight® models equipped with 128 or 131CI Stage IV kits. Thanks H9FXE

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