Detail 01
Size 1
Largest rim diameter in Bach's standard numbering. More lip vibrates, more air required, less margin for tired chops.

Independent shopping perspective
Silver-finish Bach trumpet mouthpiece in the largest standard rim size. For established players who want a wide rim and deep cup, not for beginners.

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
Largest rim diameter in Bach's standard numbering. More lip vibrates, more air required, less margin for tired chops.
Detail 02
Stock cup depth and backbore for that rim. Letters like B or C mark different cup profiles.
Detail 03
Slicker on the lip than raw brass and easier to keep clean. Plating thins at contact points over years.
Detail 04
Seats in a standard Bb trumpet receiver. Will not seat correctly in a cornet or flugelhorn leadpipe.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
For most, yes. The wide rim and deep cup demand a lot of air and settled chops. Students usually start on a smaller number and work up.
It fits standard Bb trumpet receivers. Cornets and flugelhorns use different shank tapers, so it will not seat properly in those.
The number sets rim diameter, the letter sets cup depth. A plain 1 is the deeper stock cup; a 1C is shallower at the same rim size.
Mostly feel. Silver is slick against the lip and easy to clean. The rim, cup and backbore dimensions determine how it responds.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.