Boneshakers M8 Slip-On Mufflers for 2017-Up Harley Touring

Make your bike the loudest on the block with the Boneshaker Harley M8 slip-on exhaust muffler. Engineered for Harley Touring models 2017 and up, this slip-on replaces your tame stock exhaust for an aggressive, deep-throated growl that demands attention wherever you ride.

Sold in pairs and built from rugged steel in North Carolina, our Harley Milwaukee 8 exhaust muffler is available with your choice of an ultra-tough black Cerakote or sleek chrome finish. Polished or black billet end caps deliver a custom look with a serious attitude. Featuring a cat-back design, installation is straightforward, with no emissions tampering necessary.

When you roll with Boneshakers’ 2017 and up Harley-Davidson slip-ons, you don’t just ride—you dominate. Fully backed by a Limited Lifetime Warranty, our Harley M8 slip-on exhaust muffler brings raw sound, bold looks, and serious performance. If you want to be heard, it’s time to upgrade!

Muffler Length (including tip): 28 7/8”

Body Diameter: 4 3/8”

Inlet Inner Diameter: 1.75” (Left), 2.50” (Right)

Material: Steel

Weight: 14 lbs

Mounting Style: Same as stock

Finish Options:

• Chrome
• Black Ceramic Coat (Cerakote) – Highly durable and heat-resistant for long-lasting performance

Key Features:

• Proprietary baffle design and megaphone muffler maximize sound projection

Compatibility: Designed to fit all stock configuration dual head pipes

Sound Level (dB Rating): Not yet rated

Street-Legal Compliance:

• Cat-back system—does not remove or alter emissions catalysts

Warranty Coverage:

• Limited Lifetime Warranty on material defects

1-Year Warranty on finish

Thunderous, Aggressive Sound: This Harley Milwaukee 8 exhaust muffler is engineered for a deep, bold rumble that turns heads and gives your bike a commanding presence.

Simple Cat-Back Installation: Boneshaker slip-on mufflers bolt directly onto stock head pipes without modifying emissions controls, making installation quick and hassle-free.

Tough Steel Construction: Our 2017 and up Harley-Davidson slip-ons are built with premium steel for durability, strength, and long-lasting performance in all riding conditions.

Stylish Finish Options: Available in heat-resistant black Cerakote or sleek chrome, these exhaust mufflers give your bike a custom edge with attitude for days.

Billet End Caps: Select your Harley M8 slip-on exhaust in black or polished billet end caps to give your bike a pristine, luxurious look.

Proprietary Baffle Design: Optimized for maximum sound projection and performance while maintaining backpressure for smooth throttle response.

• Road King
• Street Glide
• Street Glide Special
• Road Glide
• Road Glide Special
• Electra Glide Ultra Classic
• Ultra Limited
• Road King Special
• Road Glide Ultra
• CVO Street Glide
• CVO Road Glide
• CVO Limited

Projects a Mighty Growl: Turns your bike’s ordinary stock sound into a powerful, deep roar that commands attention while you ride.

Elevates Bike Aesthetics: Your choice of a black Cerakote or sleek chrome finish with billet end caps gives your Harley a striking, custom look.

Easy, Hassle-Free Installation: This Harley M8 slip-on exhaust muffler mounts directly to stock head pipes, requiring no modifications to tuning or emissions controls.

Performance Boost: Boneshakers’ proprietary baffle design optimizes backpressure and airflow, enhancing throttle response for smooth performance.

Durable, Top-Quality Build: Our Harley Milwaukee 8 exhaust mufflers are built from premium steel and precision-engineered for unwavering durability, performance, and dependability.

Proudly Built in the USA: These 2017 and up Harley-Davidson slip-ons are designed and manufactured in North Carolina with top-tier craftsmanship and strict quality standards.

Will Boneshaker slip-ons fit my Harley?

These slip-ons are designed for Harley-Davidson M8 Touring bikes from 2017 to the present day. Compatible models include, but are not limited to, the Ultra Limited, Street Glide, Road Glide, and Road King.

Our Harley M8 slip-on exhaust mufflers are easy to install, as they bolt directly to stock dual head pipes with no modifications necessary. Verify fitment for your Harley model before placing an order.

How loud are these mufflers compared to stock varieties?

These slip-ons have not yet been dB-rated, but rest assured they roar! They’re substantially louder than stock exhausts, delivering a deep, powerful rumble that makes sure everyone hears—and feels—you coming. If you want to turn heads and be the loudest on the block, these mufflers get the job done.

Do I need to tune my bike after installing these mufflers?

Thanks to our user-friendly cat-back design, these mufflers don’t require any tuning or alterations to your Harley’s emissions system. That said, if you use this Harley M8 slip-on exhaust muffler alongside a full exhaust system or aftermarket air intake, a fuel tuner may help to enhance throttle response and overall performance.

Are these slip-ons legal for street use?

Yes, this Harley Milwaukee 8 exhaust cat-back muffler doesn’t alter or remove the bike’s catalytic converters, which should keep your ride street-legal in most places. Noise laws do vary by location, so be sure to check your local regulations before ordering.

How hard is it to install this muffler?

Installing our 2017 and up Harley-Davidson slip-ons is easy, fast, and hassle-free. They slip right onto the stock head pipes and mount with factory hardware. You won’t need to do any cutting, welding, or modifications to your emissions system. In most cases, this Harley M8 slip-on exhaust muffler can be installed in less than an hour using basic hand tools.

Does this muffler change my bike’s performance?

Although their main purpose is to boost your Harley’s sound and look, our slip-ons have a proprietary baffle design that optimizes exhaust flow. This can help your throttle feel smoother and more responsive, giving your bike a slight performance boost, especially when used alongside a high-flow air intake.

What kind of warranty do these mufflers come with?

Enjoy lasting peace of mind, knowing these Harley Milwaukee 8 exhaust mufflers are backed by a Limited Lifetime Warranty that covers material defects. The black Cerakote or chrome finish is covered by a 1-Year Warranty, ensuring that your Harley M8 slip-on exhaust muffler retains its high-end look and outstanding durability.