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Schilke 40 vs Schilke 42B

The Schilke 42B has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
    Schilke 40
    • Trombone
    Cup diameter22.53 mm / 0.8870 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Schilke 42B
      • Trombone
      Cup diameter22.99 mm / 0.9051 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Schilke 42B has a cup diameter of 22.99 mm / 0.9051 in compared to 22.53 mm / 0.8870 in on the Schilke 40 — a difference of 0.46 mm / 0.0181 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      Which is better?

      Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.

      Open in interactive tool + Add third mouthpiece Schilke 40 details Schilke 42B details Schilke 40 equivalents Schilke 42B equivalents

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