Air Cleaner Intake Filter Kit for Harley Touring Road King Glide (2017-2025) - Whirling

High-Flow Forward-Facing Air Intake for 2017-2025 Harley Davidson Road King, Road Glide (Milwaukee-Eight / FL Touring)

Replaces the restrictive factory air cleaner with a 90° forward-facing high-performance synthetic filter to optimize laminar airflow into the Milwaukee-Eight throttle body for improved volumetric efficiency.

The Stock Road King & Road Glide Intake Restriction

The OEM air cleaner assembly on the Milwaukee-Eight (M8) platform is engineered primarily for EPA noise compliance and emissions rather than peak performance. The stock paper elements and enclosed plastic housings create significant intake turbulence and air starvation at higher RPMs. Furthermore, the factory design is prone to heat soak, where the internal air temperature rises, leading to retarded ignition timing and loss of torque. The bulky profile also limits rider legroom, forcing an unnatural knee position during long-distance touring.

The Engineering Solution

This intake kit utilizes a 90-degree forward-facing aluminum elbow to capitalize on ram-air dynamics, significantly increasing the volume of oxygen-rich air reaching the combustion chamber. The assembly features a massive synthetic gray filter element with an inverted top, which maximizes surface area for superior CFM (Cubic Feet per Minute) ratings compared to standard flat filters. Constructed with a precision-machined aluminum backing plate and finished in a durable black powdercoat and anodized treatment, this kit eliminates the 'choke point' of the factory system. The synthetic filter material is water-resistant and requires no oiling, preventing sensor contamination while providing a deeper, more aggressive intake note.

Technical Specifications

Compatibility

• Fit For M8 Softail 2018-2023
• Fit For M8 Touring 2017-2023
• Fit For M8 Trike 2017-2023
• Specifically compatible with 2017-2025 Road King and Road Glide models equipped with Milwaukee-Eight powerplants.

The Harley Davidson Performance Standard

Designed for the heavyweight American V-Twin, this intake provides the structural integrity required for high-torque applications. The aluminum construction ensures no warping under high thermal stress, maintaining a perfect seal at the throttle body to prevent vacuum leaks and ensuring maximum reliability during cross-country hauls.