Harrelson Trumpets
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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
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 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.


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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.



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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.
​

5MM Modular Mouthpiece (9pc Kit)

$500.00
Shop

need more options?

Our deluxe kits give you more options to discover more solutions

5MM Mouthpiece (19pc & 20pc Kits)

$800.00 - $900.00
Shop

Educator 5MM Mouthpiece Kit (40pc Kit)

$1,895.00
Shop

learn more about harrelson
modular mouthpieces

 
Harrelson Mouthpiece Owners
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Join Group
Dedicated to Harrelson Mouthpiece Owners who want to share information, experiences, photos and buy, sell and trade components.
 
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Location

Have questions?

Our address is 5650 Lowell Blvd unit B, Denver, Colorado 80221
Send an email by clicking the envelope icon to the right. Or call ahead and visit us for an in-person play test session and tour. 303.657.2747

Ask Jason...

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  • Performance
    • VIP Private Offers
    • SpectraTone
    • Build My Mouthpiece >
      • Intro to Mouthpieces
      • Artist Series >
        • Artist Bodies
        • Artist Rims
    • Mouthpiece Components >
      • Rim Sizes
      • Cup Sizes
      • Throat Sizes
      • Body Sizes
      • Backbore Sizes
      • Nut Sizes
    • Increase Efficiency >
      • Mod Kits
      • Finger Button Options
    • Adjustable Performance
    • Adjustable Peformance Tools
  • Advantage
    • Clinics & Tours
    • The Harrelson Story
    • Technology
    • News >
      • Jason's Blog >
        • Jason Harrelson
      • Jen's Blog
      • Company History
      • Lessons Link >
        • Teacher Information
      • Get Social
    • Clients >
      • Our Clients >
        • Client Features
      • Trumpet Components >
        • Leadpipes & Bells
        • Tuning Slides & Bell Crooks
        • Receivers
        • Bottom Cap options
        • Water Keys
      • Contact Us
      • Shipping
      • Instrument Registry
      • Acclimation
      • Maintenance
    • Trumpet Momentum >
      • Trumpet Momentum Level 1 >
        • TM 1 - Blog
        • TM 1 - Assessments
        • TM 1 - Exercises
      • Trumpet Momentum Level 2 >
        • TM 2 - Blog
        • TM 2 - Assessments
        • TM 2 - Exercises
        • TM 2 - Beta Testing
      • Trumpet Momentum Level 3 >
        • TM 3 - Blog
        • TM 3 - Assessments
        • TM 3 - Exercises
        • TM 3 - Beta Testing
        • TM 3 - Case Studies
        • TM 3 - Regional Clinics
    • We have Your size
    • 100% Guarantee
  • Store
  • Instruments
    • Rumors & Dreams
    • Model Comparison
    • Buy A Harrelson
    • Muse Modular MMXX
    • 2023 VPS Summit G-Series
    • "X" Series
    • Trumpet Gallery