Detail 01
Small shank
Fits small-bore tenor trombones only. It will sit loose and leak in a large-shank receiver, no adapter included.

Independent shopping perspective
Gold-plated small-shank trombone mouthpiece, 5BS size. For small-bore tenor players who want a bigger, more solid sound without changing horns.

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
Fits small-bore tenor trombones only. It will sit loose and leak in a large-shank receiver, no adapter included.
Detail 02
Mid-size for the small-shank range — wider than the 12CS jazz model, narrower than the 4BS. More sound, more endurance demand.
Detail 03
A moderately wide rim. Spreads pressure across the lip for better endurance, at some cost in flexibility between wide intervals.
Detail 04
Opens up airflow versus tighter small-shank models. More volume and low-end body available, but it takes steadier air.
Detail 05
Balances resistance and openness. Keeps the sound centered instead of spreading when you push into loud playing.
Detail 06
Softer, warmer feel on the lip than silver and hypoallergenic. Wears faster, so expect plating to thin over years of heavy use.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
No. The 5BS is small shank. For a large-bore horn you need the large-shank equivalent, the 5BL, which has the same 25.73mm cup but a 6.87mm throat.
The 6BS is slightly smaller at 25.30mm with a shallower cup and V-type backbore — easier high register. The 5BS gives more body and a more solid sound.
Mainly if silver irritates your lip or you dislike the slicker feel of silver. Acoustically the cup, rim and throat dimensions do the work.
The 12CS or 10CS are the jazz-oriented small shanks in this line. The 5BS aims at a fuller, more solid sound with a brilliant high register.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.