Detail 01
.988" (25.10 mm) cup diameter
Mid-size rim. Enough room for a full tone without the endurance cost of the 51-and-up sizes.

Independent shopping perspective
Schilke 47C4 small shank trombone mouthpiece. Medium .988" cup with a wide semi-flat rim — a versatile size for advancing students and section players.


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
Mid-size rim. Enough room for a full tone without the endurance cost of the 51-and-up sizes.
Detail 02
Wider and flatter than the standard 47 rim. Spreads pressure for comfort on long playing sessions.
Detail 03
Standard-size throat. More resistance than the larger J or F throats, which helps response and holds pitch center.
Detail 04
Fits small and medium bore tenor trombone slides. Won't seat in a large shank receiver.
Detail 05
Standard finish. Harder-wearing than gold, slightly grippier on the lip. Can irritate players with a nickel or silver sensitivity.
Final check

Product questions
Straight answers to the questions shoppers most often ask about this product.
Same general size and response, but the 47C4 has a slightly wider, semi-flat number 4 rim. The difference is rim comfort, not tone.
Yes. At .988" it sits above beginner 45 and 46 sizes without jumping to the large 51-and-up diameters, so the transition is manageable.
No. It's a small shank piece for small and medium bore tenor trombones. Bass trombones need a large shank.
The shank is cut for small shank trombone. Euphonium players generally want larger diameters and deeper cups than this.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.