Build MY Mouthpiece

We are offering FREE component exchanges + personal consults

5MM Modular Mouthpiece Kits
&
Muse Modular MMXX trumpets
(leadpipe & bell options)

when you visit our Denver, Colorado shop
through September of 2021
(that's more than a year to adjust your setup with expert advice)

improve comfort - play longer - maximize range

We have worked closely with thousands of trumpet players over the past 20+ years to discover comfort and fit are more important than any other factor. We have listened to your concerns and developed a system that guarantees a perfect fit to you as an individual.

The "one size fits all" approach doesn't fly here. We build every solution around your personal needs.

Professional Race Car drivers are backed by 24/7 support teams to shave seconds from every lap.

Winning athletes train with the best coaches using cutting edge technologies and gear.

Now you can take your playing to the next level with Harrelson on your team.

Discover the world's most efficient mouthpiece solutions available in variations as diverse as your musical endeavors.

in FREE unlimited parts exchange for the first 30 days - Full 7-day money back guarantee
Call the 5MM Hotline at 303-657-2747

Ready to build your mouthpiece?

Your adventure begins with our 9-piece kit
Includes everything you need to set up two completely different sizes with 6 variations in tone color, attack and projection.

From this starting point, you can add components at any time to build endless variations suitable for every playing situation.