Feuling High-Flow Air Cleaner for M8 Harley-Davidson Models

With decades of experience designing high-performance cylinder heads, combustion chambers, and intake systems, Feuling Parts introduces a next-level bolt-on air cleaner engineered to deliver real horsepower and torque gains across stock and modified Milwaukee-Eight engines.

This performance air cleaner features a one-piece design that not only improves airflow efficiency but also creates a clean, compact look while simplifying installation compared to traditional multi-piece intake systems. Extensive flow bench development and dyno testing ensure optimal performance in real-world riding conditions.

Exceptional gains are seen on engines equipped with ported heads, performance intakes, and larger throttle bodies, making this an ideal upgrade for both mild and aggressive M8 builds.

🔧 Key Features & Performance Benefits

• Proven horsepower & torque gains on stock and modified M8 engines

• One-piece intake design for cleaner appearance and easier installation

• Lengthened intake runners increase air velocity and improve cylinder fill

• High-flow billet aluminum velocity stack

  • Optimized opening diameter

  • Precision outer lip

  • Internal taper (ID) for smooth airflow transition

• Balanced dynamic airflow for improved throttle response

• OEM-style cylinder head breathing routed into the intake with optimized vent locations

• Convertible backing plate allows optional cylinder head venting

• Developed on the flow bench & dyno tested

• Made in the USA

📦 What’s Included

• High-flow washable & reusable 2.5″ wide air filter

• One-piece billet aluminum filter cage

• Convertible backing plate

• All required mounting hardware

🔩 Throttle Body Compatibility

This Feuling air cleaner is designed to work with a wide range of throttle body sizes:

• OEM 55mm throttle bodies

• 64mm Screamin’ Eagle throttle bodies

• 58mm & 62mm HPI throttle bodies

🏁 Why Choose a Feuling Air Cleaner?

Unlike generic bolt-on intakes, this system was engineered as a complete airflow solution—not just a cosmetic upgrade. Every component works together to improve air velocity, volume, and consistency, resulting in stronger throttle response and measurable power gains.

If you’re serious about performance, this is one of the most effective M8 air cleaner upgrades you can make.

🏍️ Fitment Guide

Fits the following Milwaukee-Eight Softail, Touring & Trike models:

M8 Softail Models

• 2018–2024 Street Bob FXBB

• 2018–2024 Fat Boy / Fat Boy 114

• 2018–2024 Heritage Classic / Heritage 114

• 2018–2024 Fat Bob / Fat Bob 114

• 2018–2024 Low Rider / Low Rider S / Low Rider ST

• 2018–2024 Softail Standard FXST

• 2018–2021 Sport Glide, Slim, Deluxe

• 2018–2020 Breakout / Breakout 114

• 2019–2020 FXDR 114

Touring & Trike Models

• 2017–2024 Street Glide / Street Glide Special / ST

• 2017–2024 Road Glide / Road Glide Special / ST / Limited

• 2017–2024 Road King / Road King Special

• 2017–2024 Electra Glide / Ultra / Ultra Limited

• 2017–2024 Freewheeler & Tri Glide

• Select CVO Touring models (see list above)

✔️ Compatible with most 2017–2024 Milwaukee-Eight touring and Softail platforms
❓ If you’re unsure about fitment, contact us before ordering

🔗 Additional Resources

• 👉 More Performance Bagger Air Cleaners

• 🎥 Check us out on YouTube for installs, dyno testing, and tech tips