Bach 3517C Classic 7C Trumpet Mouthpiece Overview

The Bach 3517C Classic 7C is a silver-plated trumpet mouthpiece built on Vincent Bach’s long-established 351 trumpet shank and 7C cup configuration, widely used as a reference setup for Bb trumpet. This mouthpiece is supplied brand new in the original manufacturer’s packaging and is offered as a genuine Bach product through an authorized Bach dealer.

Bach 3517C Classic 7C Trumpet Mouthpiece Specifications

• Series: Vincent Bach Classic
• Cup: 7C ( 3517C)
• Cup depth: Medium
• Standard 351 trumpet shank
• Cup diameter: 16.20 mm
• Rim: Well-rounded edge
• Finish: Silver plate

Condition 

Brand new in the original manufacturer’s packaging

Who the 3517C Classic 7C Trumpet Mouthpiece is For

The Bach 3517C Classic 7C is a medium-cup trumpet mouthpiece designed to provide a familiar, broadly compatible starting point for Bb trumpet players and a dependable baseline for developing fundamentals. It is commonly chosen by school musicians and also used by many artists because the 7C size is a widely recognized standard that supports clear articulation and a bright, direct tonal balance.

This model is a practical choice when you need a genuine Bach mouthpiece that prioritizes consistent intonation, even response across registers, and a rim profile that offers a secure, comfortable grip for extended playing. The 3517C is also useful as a reference mouthpiece for teachers, section players, and doublers who want a known, repeatable setup.

Common Questions about the Bach 3517C Classic 7C

Is the Bach 3517C Classic 7C a good standard mouthpiece size?

Yes. The 7C is one of the most widely used trumpet mouthpiece sizes and is often recommended as a general-purpose starting point for Bb trumpet because it is broadly compatible with many playing needs.

What does “medium cup” mean on the 7C?

Medium cup depth is a middle-ground specification intended to balance ease of response with a clear, versatile sound, making it suitable for everyday practice and general ensemble playing.

Is this a genuine Bach mouthpiece, and is it new?

Yes. This mouthpiece is brand new in the original manufacturer’s packaging, and it is sold by an authorized Bach dealer.

We are proud to be an authorized Bach dealer