Detail 01
Group II
Bach's medium-small rim group. Narrower than the usual starter size, which makes the upper register feel more supported.

Independent shopping perspective
A Bach trumpet mouthpiece with a medium-small rim and medium cup. For players who want a step in from the standard student size without changing tone much.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Bach's medium-small rim group. Narrower than the usual starter size, which makes the upper register feel more supported.
Detail 02
Rim diameter. Higher numbers are smaller, so 11 sits a step in from the common 7 most players start on.
Detail 03
Medium depth — the all-purpose choice. Holds some warmth without the air demand or resistance of a deeper cup.
Detail 04
Seats in any standard Bb trumpet receiver. Cornets and flugelhorns use different shanks and will not take it.
Detail 05
Only the rim changes from a standard setup. Tone stays close; what shifts is comfort and endurance.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It works, but most beginners do better on the wider standard starter rim. The 11C suits a player who has already found that size uncomfortably broad.
Same medium cup depth, slightly smaller rim diameter. The sound stays similar; the 11C feels tighter on the lip and gives a bit more support up high.
It can make them feel easier to hold, but it does not create range. Air support and practice do that. A rim that is too small will cost you endurance and low-register body.
No. Cornet receivers take a shorter, narrower shank. This is cut for standard Bb trumpet.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.