Detail 01
Large shank
Select it only for a trombone that takes a large-shank mouthpiece.

Independent shopping perspective
Built around a large shank and a 26 mm cup, the gold 4ABL is a Classic Series trombone mouthpiece with a medium backbore. Its design is voiced around a dark-centered sound while retaining flexibility, with particular attention to upper-register performance. The 6.72 mm rim and 7.38 mm throat define the playing interface and airflow dimensions for this specific 4ABL model.


Strong match
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
Select it only for a trombone that takes a large-shank mouthpiece.
Detail 02
These are the 4ABL's stated cup and rim dimensions.
Detail 03
These are the specified internal dimensions and backbore profile for this model.
Final check

Product questions
Straight answers to the questions shoppers most often ask about this product.
It has a gold finish.
It uses a large shank.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.