Harley Screamin' Eagle M8 Extreme CNC Ported Cylinder Head Kit Touring Trike
Part Number 16500747
-Replacement cylinder heads for Twin-Cooled '17-later Milwaukee-Eight models equipped with 128 or 131CI Stage IV kits
-When combined with a larger bore throttle body, these CNC Cylinder Heads provide significantly improved efficiency of cylinder filling, leading to more explosive power and increased rear-wheel torque when compared to stock
-Factory equipped with high-performance valve springs that remain stable with high-lift cams and in high-RPM operation
-Intake valves 41mm and exhaust valves 33mm
-Dealer Install Recommended: Yes
-ECM Calibration Required: Yes
-Sold Separately: Screamin’ Eagle Pro Street Tuner
-Sold In Units: Pair
-In the Box: Front and Rear CNC Ported Heads
The Harley-Davidson part number 16500747 fits Twin-Cooled (liquid-cooled) 2017-later Milwaukee-Eight Touring and Trike models, specifically those equipped with 128ci or 131ci Stage IV Performance Kits.
Specific Fitments
The 16500747 Screamin' Eagle Milwaukee-Eight Extreme CNC Ported Cylinder Heads are designed as replacement components within specific performance upgrade paths, not typically as a standalone upgrade for a stock engine.
Engine Type: Must be a Twin-Cooled (liquid-cooled) Milwaukee-Eight engine.
Model Years: Fits 2017 and newer Touring and Trike models.
Required Kits: These heads are intended for use on engines that have been upgraded with either the 128ci or 131ci Stage IV Performance Kits.
Installation Requirements
Installation of these heads is a performance upgrade and requires additional components and calibration:
ECM Calibration: All models require the Electronic Control Module (ECM) to be calibrated using a Screamin' Eagle Pro Street Tuner or a dealership-installed Screamin' Eagle calibration.
Gaskets and Nuts: A Top End Overhaul Gasket Kit and eight new cylinder head flange nuts must be purchased separately.
Spark Plugs: Each cylinder head requires two 10mm spark plugs.
Service Manual: A service manual specific to the motorcycle's year and model is required for proper installation.
Exclusions
This part does not fit models from 2025 and later, specifically FLTRXRRSE models.
It does not fit the newer Center-Cooled 2023-later Touring models, which use a different part number (16501060 or 16501332)
Selling as pictured.
More than welcome to pick up at shop in butler pa & save shipping.
Nos Trailer
011226-JM9