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  • SpectraTone & 5MM Backbore

SpectraTone & 5MM Backbore

SKU: Backbore
$42.00
$40.00
$40.00
On Sale
Unavailable
per item

Now available in RED BRASS to improve efficiency.

May 2022 introduces 6 NEW sizes! (20.29, 20.30, 21.34, 21.36, 22.34, 22.36)


The Backbore is an extension of the Throat that determines tonal color, intonation, and projection pattern.


Call or email to order backbores for cornet or flugel 303.657.2747 harrelsontrumpets@gmail.com

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Quickly adjust the projection pattern of your SpectraTone and 5MM mouthpieces with backbores options.
Picture
Recommended backbore sizes for the NEW SpectraTone YELLOW mouthpiece are listed in this chart. We suggest changing the throat and backbore together when moving from Yellow to any other color.
  • Performance
    • 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
    • Trumpet Momentum
    • The Harrelson Story
    • We have Your size
    • Technology
    • 100% Guarantee
  • Instruments
    • Model Comparison
    • Buy A Harrelson
    • Muse Modular MMXX
    • 2021 VPS Summit G-Series
    • "X" Series
    • Limited Editions >
      • Summit One
      • Summit Midnight
      • Summit Art
    • Bravura Series >
      • 2021 Bravura Flugelhorn
      • 2021 Bravura Piccolo
    • 2018 VPS Summit Series
    • HT6 - Kickstarter 2022
    • VPS Summit Eb
    • Acoustic Armour
    • Trumpet Gallery
  • News
    • Jason's Blog >
      • Jason Harrelson
    • Lessons Link
    • Teacher Information
    • Weekly Trumpet Challenge
    • Get Social
    • Clinics & Tours
    • Our Clients >
      • Client Features
    • Jen's Blog
    • Company History
  • Clients
    • Contests & Winners
    • Order My Trumpet >
      • Leadpipes & Bells
      • Tuning Slides & Bell Crooks
      • Receivers
      • Bottom Cap options
      • Water Keys
    • Contact Us
    • Shipping
    • Instrument Registry
    • Acclimation
    • Maintenance
    • Roots of Music
  • Store