Detail 01
.988-inch (25.10 mm) cup diameter
Mid-large for tenor trombone: enough rim for a full sound without the lip travel of a 51 or 52.

Independent shopping perspective
Gold-plated Schilke 47C4 trombone mouthpiece, .988-inch cup with a wide semi-flat rim, small shank. For players who already know the 47 fits them.


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-large for tenor trombone: enough rim for a full sound without the lip travel of a 51 or 52.
Detail 02
Flatter and wider than the standard 47 rim. Spreads pressure over more lip, so endurance improves and flexibility drops slightly.
Detail 03
Schilke's standard bore. Resistance stays moderate, so response is quick rather than wide open.
Detail 04
Seats in small and medium-bore tenor slides. It will not fit a large-shank receiver.
Detail 05
Surface finish only. Cup, rim and throat are the same 47C4 dimensions as the plain version.
Final check

Product questions
Straight answers to the questions shoppers most often ask about this product.
Only if the receiver is small shank. Many large-bore tenors take a large shank, so check the slide before ordering. No adapter is included.
Cup diameter is nearly identical — .984 versus .988 inch. The C4 adds a wider, semi-flat number 4 rim for more lip support and endurance.
The dimensions are identical to the standard 47C4: .988-inch cup, 15/64 throat, number 4 rim. Plating is the finish, not the playing size.
No. It's a small-shank tenor size at .988 inch. Bass trombone players need a considerably larger cup diameter and a large-shank receiver.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.