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5MM Throat Size Reference: Trumpet, Cornet, Flugelhorn

The 5MM Throat regulates air flow and is a major factor in the harmonic overtone color produced by our 5MM Modular Mouthpiece System. The larger the throat, the greater the overall dynamic and tonal range.

Most standard mouthpieces have throat measurements in the range of .145 to .165 with an end diameter of .20 to .22 inches. A 3C is typically .145 by .21 inches and is designated as F145.21 as in the example illustration.

Order your custom Throats here


Understanding Size options
HT Size - this letter + 5-digit number is derived from the Cup Size, Throat ID (inside diameter) and the Exit Diameter
Throat ID - measured at the smallest inside diameter, the vast majority of standard OEM mouthpieces range from .135 to .160
Exit ID - end diameter that mates with the Backbore (hundredths of an inch)
Cup Depth - Throat Length Letter must match Cup Depth Letter

Shape - Last letter sometimes used at end as in "C.145.20H" (see more on Throat Shapes below)

Drill Size - other manufacturers use the 1857 wire gauge standard, Harrelson mouthpieces use actual inch dimensions


Getting Started
The easiest way to get started in the 5MM System is to choose a Rim close to your current mouthpiece.
To save you time and energy, you may order your 5MM by simply telling us which brand and size options you prefer and we will do all the cross reference work to get your mouthpiece built right the first time. It is not necessary to learn our sizing system.

1) Order based on your current size
2) Build your own size
3) Test any 5MM variations in our shop to find the perfect setup

Need help with sizes and options? We're here to help. Call us at 303.657.2747 or email harrelsontrumpets@gmail.com to discuss your needs with our expert team.

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Compression Series Throats offer more front end to the attack. Great for lead or situations where the attack is more important.


"CS" series - bright and loud with a balance of depth and ease in upper register
"ES" series - extremely bright and loud, easiest in upper register
"HS" series - aids in upper register while remaining big and full

Location

Have questions?

Send an email by clicking the envelope icon to the right. Or call ahead and visit us for an in-person lesson or tour. 303.657.2747

Take your playing to the next level with Trumpet Momentum Levels 1, 2, and 3!

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  • Performance
    • VIP Private Offers
    • Instagram Community
    • 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