Which has a bigger cup — Bach 5C or Stork CM3?

The Stork CM3 has a cup diameter of 16.30 mm / 0.6417 in compared to 16.25 mm / 0.6398 in on the Bach 5C — a difference of 0.05 mm / 0.0020 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 5C and Stork CM3?

Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.

Bach 5C vs Stork CM3

Name: Stork CM3
Brand: Stork

The Stork CM3 has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

Bach 5C

• Trumpet

Material—

Best suited for

🎵All-round versatile — balanced cup for general playing

Mouthpiece B

Stork CM3

Silver plate · Trumpet

Classical

Material—

Best suited for

🎵All-round versatile — balanced cup for general playing

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.