Harley-Davidson Screamin Ealge Pro CNC Ported Factory Cylinder Heads Black XL 16500074

CNC Ported Heads offer a cost-effective approach to upgrading the performance of your motorcycle. Harley-Davidson Screamin Ealge Pro CNC Ported Factory Cylinder Heads Black XL 16500074

The intake and exhaust ports are meticulously machined for smooth surfaces, improving the flow characteristics of air and fuel in order to provide enhanced performance

But it doesn?t end there, the proven stock valves rest in reshaped valve seats to further improve flow rates

The combustion chambers have been machined for smooth surfaces and feature a blended radius on the bathtub edge to reduce detonation by eliminating hot spots and promoting improved combustion

The head gasket surface has been milled to maintain stock combustion chamber volume (59.9cc), which results in stock compression when used with Original Equipment pistons

Compression can be increased with the installation of Screamin Eagle high-compression pistons

Heads are assembled with Original Equipment valves and high-performance valve springs that support cams with lift up to .585.”

All EFI models require ECM calibration (priced separately)

For race application only

Note

Fits Harley-Davidson ’07-later XL1200 models (except ’98-’03 XL1200S). Requires installation of Perfect Fit Pushrod Kit (-.050) P/N 18424-06.

Harley-Davidson Screamin Ealge Pro CNC Ported Factory Cylinder Heads Black XL 16500074

The Harley-Davidson Screamin’ Eagle Pro CNC Ported Factory Cylinder Heads in Black (Part #16500074) represent a high-performance upgrade designed to unlock enhanced power and efficiency from your Sportster (XL) engine while maintaining the reliability and fitment expected of factory-sourced components. These cylinder heads are engineered as a direct replacement for stock heads but have been meticulously CNC ported to optimize airflow and combustion characteristics, giving riders a substantial performance advantage without compromising everyday useability. Harley-Davidson Screamin Ealge Pro CNC Ported Factory Cylinder Heads Black XL 16500074

At the heart of these cylinder heads is precision CNC porting, a process that uses computer-controlled machining to reshape and refine the intake and exhaust ports with exacting consistency. Where stock cylinder heads are designed primarily for broad usability and manufacturing efficiency, CNC ported heads are crafted to reduce airflow restrictions and smooth turbulence, allowing the engine to breathe more freely. Improved airflow translates into more efficient filling and evacuation of cylinders during each cycle, which typically yields measurable gains in throttle response, torque, and peak horsepower. For riders seeking to extract more performance from their XL platform—whether for spirited street riding, track use, or performance builds—this modification plays a pivotal role. Harley-Davidson Screamin Ealge Pro CNC Ported Factory Cylinder Heads Black XL 16500074

The Screamin’ Eagle Pro CNC heads are finished in a sleek black coating that not only adds a refined visual touch but also offers a measure of protection against corrosion and the harsh thermal environment of the engine. This finish complements blacked-out performance builds and modern styling trends, giving your engine a sharp, purposeful look that matches its enhanced capabilities. Because these heads are produced by Harley-Davidson under the Screamin’ Eagle performance brand, they are manufactured to strict OEM quality standards. This ensures proper fitment with existing components such as valve covers, rocker boxes, and intake systems, and simplifies installation with existing gaskets, hardware, and torque specifications. Harley-Davidson Screamin Ealge Pro CNC Ported Factory Cylinder Heads Black XL 16500074

Performance-minded riders will appreciate that these cylinder heads are designed to work synergistically with other Screamin’ Eagle upgrades, including high-flow air cleaners, performance camshafts, and fuel management systems. Paired together, these components allow the engine to deliver a more potent power curve across a wide RPM range while maintaining smooth throttle transitions and real-world rideability. Although installation may require adjustments to fueling or tuning to maximize gains and ensure proper air/fuel ratios, the overall package reflects a plug-and-play philosophy familiar to seasoned Harley technicians and enthusiasts alike. Harley-Davidson Screamin Ealge Pro CNC Ported Factory Cylinder Heads Black XL 16500074

In addition to performance benefits, the Screamin’ Eagle Pro CNC Ported Factory Cylinder Heads maintain the robust durability expected of Harley-Davidson hardware. Precision machining improves performance without introducing compromises in strength or longevity, meaning these heads can withstand the rigors of everyday riding and extended high-load operation. Harley-Davidson Screamin Ealge Pro CNC Ported Factory Cylinder Heads Black XL 16500074

In summary, the Harley-Davidson Screamin’ Eagle Pro CNC Ported Factory Cylinder Heads – Black (16500074) offer a substantial upgrade for Sportster owners wanting increased airflow, improved performance, and a custom blacked-out appearance—all with OEM-level quality and compatibility. Harley-Davidson Screamin Ealge Pro CNC Ported Factory Cylinder Heads Black XL 16500074