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Screamin' Eagle Milwaukee-Eight Extreme Ported Cylinder Heads

Part Number: 16501059
Color: Black Granite
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This Center-Cooled generation of Extreme Ported Cylinder Heads has been meticulously designed to help optimize air/fuel flow and velocity. Building on the previous Oil/Twin-Cooled generation of CNC-Ported Milwaukee-Eight® Cylinder Heads, the Screamin' Eagle team refined the intake and exhaust ports based on extensive racing efforts to help maximize the flow of high-velocity air through 2mm larger (42mm intake/34mm exhaust) valves than the Original Equipment heads and fully machined the combustion chamber to help optimize combustion efficiency.

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Screamin' Eagle Milwaukee-Eight Extreme Ported Cylinder Heads
This Center-Cooled generation of Extreme Ported Cylinder Heads has been meticulously designed to help optimize air/fuel flow and velocity. Building on the previous Oil/Twin-Cooled generation of CNC-Ported Milwaukee-Eight® Cylinder Heads, the Screamin' Eagle team refined the intake and exhaust ports based on extensive racing efforts to help maximize the flow of high-velocity air through 2mm larger (42mm intake/34mm exhaust) valves than the Original Equipment heads and fully machined the combustion chamber to help optimize combustion efficiency.
Due to the new race-inspired intake port geometry, these heads require the use of either Screamin' Eagle® High-Flow 68MM Intake Manifold (P/N 27300218) or Screamin' Eagle® Extreme Flow 68MM CNC Ported Intake Manifold (P/N 27300217)
Factory equipped with high-performance valve springs that remain stable with high-lift cams and in high-RPM operation
Screamin’ Eagle products are not available for sale and are not street legal in all countries. Please contact your local dealer for more information

Replacement cylinder heads for '23-Later FLHXSE and FLTRXSE and '24-later FLHX, FLTRX and FLTRXSTSE models equipped with a 131ci/135ci Stage IV kit or 135 Crate engine.

Dealer Install Recommended: Yes
ECM Calibration Required: Yes
Sold In Units: Pair
In the Box: Front and Rear CNC Ported Heads
WARRANTY: 1 year limited warranty – Go to www.h-d.com/warranty for full details
Harley-Davidson® motorcycles modified with some Screamin’ Eagle® Performance products must not be used on public roads and, in some cases, may be restricted to closed-course competition. These performance parts are 49-state U.S. EPA compliant but are NOT compliant for sale or use in California on pollution-controlled motor vehicles. California guidelines on tampering can also lead to substantial fines and penalties. Screamin’ Eagle® Performance products are intended for the experienced rider only.
Certification: 49-State U.S. EPA compliant
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