Build MY Mouthpiece

NEW XYZ Rims are now in production

New for 2022, we have standardized our Rim selections to 14 diameters in 5 shapes
Over 20 years of working with thousands of trumpet players led to these new options
Click here to see all Rim sizes available

We are offering FREE 5MM Mouthpiece fitting sessions when you visit our
Denver, Colorado showroom and purchase a 9pc kit or larger during one of our open house events

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.

We no longer offer exchanges or returns on shipped 5MM kits and components
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.