Screamin' Eagle Milwaukee-Eight Extreme Ported Cylinder Heads

Part Number: 16501059

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.

Description

• 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

Details

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.

Installation Instructions

Dealer Install Recommended: Yes

ECM Calibration Required: Yes

WARRANTY: ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

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.