Air Cleaner Intake Filter Kit for Harley Touring Street Glide FLHX (2008-2016)

High-Flow CNC Aluminum Air Intake for 2008-2016 Harley Davidson Street Glide (Twin Cam / FL Touring)

What it Does: This high-performance intake kit replaces the restrictive factory air box with an open-element CNC-machined housing and a reusable high-flow filter to significantly increase volumetric efficiency and throttle response.

The Stock Street Glide Intake Restriction

The factory intake on the 2008-2016 Twin Cam engines is designed primarily for noise attenuation and emissions compliance rather than raw performance. The OEM plastic housing features a narrow, baffled inlet that creates significant turbulence and air drag. This design leads to a bottleneck at higher RPMs, where the engine struggles to pull sufficient oxygen to match fuel delivery, often resulting in increased intake air temperatures (IATs) and sluggish mid-range acceleration. Furthermore, the stock paper filter is a 'one-and-done' component that quickly clogs, further choking the V-Twin’s ability to breathe during long-distance touring.

The Engineering Solution

This kit utilizes a CNC-machined 6061-T6 aluminum housing that eliminates the physical obstructions of the stock assembly. By moving to an open-element 360-degree design, the engine can draw air from a larger surface area, reducing vacuum lag and improving the pressure differential at the throttle body. The filtration media is a multi-layer synthetic cotton gauze that is fully washable and reusable, engineered to provide superior micron-level protection without the flow resistance of cellulose paper. The rigid aluminum construction also acts as a heat sink, providing more structural integrity than plastic components that are prone to warping under the extreme heat cycles of an air-cooled V-Twin.

Technical Specifications

Compatibility

• Harley Davidson Trike (2008-2016)
• Harley Davidson Touring Models (2008-2016)
• Harley Davidson Road King (2008-2016)
• Harley Davidson Softail (2016-2017)
• Harley Davidson Dyna FXDLS (2017)

The Harley Davidson Standard

Engineered for the long-haul rider, this intake upgrade prioritizes mechanical durability and airflow consistency. By removing the primary restriction in the Twin Cam's induction cycle, you achieve a more aggressive exhaust note and a cleaner power band, ensuring your Street Glide maintains peak performance across every mile of the interstate.

Common Questions

Will this fit my 2014 Street Glide?
Yes. It is built for 2008-2016 Street Glide FLHX models with the Twin Cam engine.

Is the filter reusable?
Yes. The multi-layer synthetic cotton gauze element is washable and reusable.

What is the housing made of?
CNC-machined 6061-T6 aluminum.

Does it fit the 2017 and later Milwaukee-Eight bikes?
This kit is made for the 2008-2016 Twin Cam Street Glide.

What difference will I feel?
The open 360-degree element pulls air from a much bigger surface than the baffled stock box, so throttle response is sharper and the bike pulls cleaner through the midrange.