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More BL & MF Size Options

BL & MF Mouthpieces for Bb trumpet

Classic Resonance LT & Prana Resonance LT (lightweight)


Rim Size Comparison: Schilke 14A4a, 13A4a, 11A4a, 6A4a, and other similar sizes


The BL and MF lead mouthpieces are ideal for lead players that prefer smaller rim diameters and shallower cups. This size range contains most of the 'go-to' sizes for demanding upper register playing where a bright 'lead trumpet' or commercial sound is desirable.


Rim/Cup Options:

*Rims are listed from larger sizes to smaller

*Cups for each rim are listed from shallow to deep


  • BLW Rim - Wider-diameter version of the BL rim, comparable to the size of a conventional 3E or 15A4a
    • BLW S1 - shallow 'lead' cup
    • BLM S1 W - medium-depth cup


  • BL Rim - The original Monette 'lead' rim design, comparable in size to the ubiquitous 14A4a
    • BLV S1 - very shallow cup
    • BL S1 - shallow lead cup
    • original BL - considered obsolete, special order only
    • BLM S1 - medium cup depth
    • original BLM/original B6L - considered obsoete, special order only
    • BLD S1 - deep cup
    • BL FL - deep V 'Flumpet' cup


  • MF III Rim - extremely popular lead mouthpiece, similar in size to the Schilke 13A4a
    • MF III - shallow lead cup
    • MF III LD - semi-shallow cup
    • MF III D - deep cup
    • MF III FL - deep V 'Flumpet' cup


  • MF II Rim - same size as MF III but with a sharper 'bite' and older cup design
    • MF II - shallow lead cup
    • MF II D - deepened version
    • MF II FL - deep V 'Flumpet' cup


  • original BL2 Rim (different rim from the BL2 S3 below) - same basic size as the MF mouthpieces
    • original BL2 - shallow lead cup
    • BL2 FL - deep V 'Flumpet' cup


  • BL2 S3 - 'Shew'-style rim, shallow lead cup, comparable to 11A4a
  • BL4 S6 - very shallow, comparable to Schilke 11A4a
  • BL5 - very small, shallow V-shaped lead cup
  • JB - comparable to Schilke 6A4a
  • BL6 - extremely small and shallow


Classic & Prana Internal Configurations

  • Prana mouthpieces allow for the most resonant sound, most effortless playing, and most consistent pitch and timbre
  • Classic mouthpieces can feel more forgiving for players who tend to play with a tighter physical approach, or who are accustomed to a non-Monette mouthpiece



  • Lead mouthpieces with shallow or semi-shallow cup depths are typically made in the lightweight Resonance LT body
  • Deeper cups are usually made in the standard-weight Resonance body.
  • If you feel that you need a non-standard weight, just add a note to your order during checkout.


Plating & Finish:

Classic mouthpieces have a shiny, buffed 24k gold finish

Prana mouthpieces have a brushed 24k gold finish

More BL & MF Size Options

PriceFrom $295.00
  • Monette mouthpieces are made-to-order and usually will not be available as ready-made stock. The standard estimated wait time to have a trumpet mouthpiece made is approximately 6-8 weeks. Less common sizes are likely to involve a longer wait time. The exact wait time is unpredictable, as it is affected by many variables. We cannot guarantee a completion date or shipping date in advance. Thank you very much for your patience while you are waiting.

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