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More B3 & B4 Size Options

B3 & B4 Mouthpieces for Bb trumpet

Classic Resonance & Prana Resonance (standard-weight & lightweight)


Rim Size Comparison: Conventional 1-1/2C, Schilke 16, and other similar rim sizes


The B3/B4 size range is very much a 'middle of the road' rim size, and a great option for former 3C, 5C, or 7C players who would like a bigger sound.


B3 and B4 rim options vary in rim contour:

  • B3 Rim: Feels a bit smaller than the B4 options, similar to the size of a conventional 2C


  • B3F Rim: This was a custom rim design with a fairly flat rim contour, hence the letter F in the name


  • B4 Rim: The original B4 rim design is somewhat flat, with a fairly sharp bite. Many players will prefer the softer-feeling B4S rim instead.


  • B4S Rim: Originally created for our friend Lew Soloff, hence the letter S in the name. Although sized like other B4 mouthpieces, this rim design was based on Lew's favorite vintage 3C


  • B4L Rim: Lead mouthpieces in this rim size have a bit more cushion on the rim for extra comfort with demanding high-note playing


Rim & Cup Options:

*Cups for each rim are listed from shallow to deep


  • B3 Rim
    • B3L S1 - shallow lead cup
    • B3LD S1 - semi-shallow cup
    • B3 S3 - standard-depth cup
    • original B3 - no longer recommended, special order only
    • B3D S1 - deep cup
    • B3 FL - deep V 'Flumpet' cup


  • B3F Rim
    • B3F S7 - very slightly shallow
    • B3F FL - deep V 'Flumpet' cup


  • B4 Rim
    • B4 S3 - standard-depth cup
    • original B4 - no longer recommended, special order only
    • B4D - deep cup
    • B4 FL - deep V 'Flumpet' cup


  • B4S Rim
    • B4S S2 - standard-depth cup
    • original B4S - no longer recommended, special order only
    • B4S D - deep vup
    • B4S FL - deep V 'Flumpet' cup


  • B4L Rim
    • B4LS S1 - very shallow cup
    • B4L S1 - shallow lead cup
    • B4LD S1 - semi-shallow cup
    • B4LD/2S3 - standard-depth cup (B4L rim with B2 S3 cup)


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



  • Mouthpieces with standard-depth or deeper cups are usually made in the standard-weight Resonance body.
  • Mouthpieces with shallower 'lead' cups are made in the lightweight Resonance LT 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 B3 & B4 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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