Detail 01
15 rim size (.675 inch)
Small-to-medium diameter. Less lip vibrating inside the cup, which trades some volume for control and staying power.

Independent shopping perspective
The silver-plated 15C4: a .675-inch rim with Schilke's semi-flat number 4 contour. The everyday version of the same mouthpiece, at a third of the gold price.

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
Small-to-medium diameter. Less lip vibrating inside the cup, which trades some volume for control and staying power.
Detail 02
Flatter, wider bearing surface. Pressure spreads across more lip, so you tire later on long dates.
Detail 03
The standard finish. Slightly more grip under the lip than gold, and it holds up to daily handling.
Detail 04
Identical playing dimensions. The entire difference is the plating, so only pay up if the finish matters to you.
Detail 05
Schilke's core line, so rim and throat sizes cross-reference cleanly if you later move to another model number.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
The plating and the price. Cup diameter, cup shape, rim contour and throat are the same. Gold feels slicker on the lip; silver has slightly more grip.
No. The sound comes from cup diameter, cup depth, throat and backbore. Plating changes how the rim feels against your lip, not the shape of the air column.
It is a small rim with a flat, endurance-oriented contour. That suits players already comfortable on a smaller diameter. If your stock piece feels cramped, look at larger numbers.
Yes. It is a standard trumpet shank and fits Bb and C trumpets. Many players carry the same rim across both horns to avoid readjusting.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.