Detail 01
.665 inch cup diameter
Middle of the range. Enough lip in the cup for a full low register without the strain a wide rim puts on the top.

Independent shopping perspective
Schilke 13C4 cornet mouthpiece, gold plate. Medium .665-inch cup with a funnel C cup and flat number 4 rim, for players who want clarity plus endurance.


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
Middle of the range. Enough lip in the cup for a full low register without the strain a wide rim puts on the top.
Detail 02
The funnel gives cornet its rounder voice, but this one stays clear rather than dark. Good when parts need to be heard.
Detail 03
Defines where the lip stops vibrating. Attacks speak faster and cleaner, at the cost of some comfort on very long sessions.
Detail 04
Spreads pressure across more lip than a rounded rim. This is the endurance difference against the standard number 3 models.
Detail 05
Throat gauge runs backward — 26 is a bit more open than 27, so this feels free-blowing rather than resistant.
Detail 06
Same rim contour as silver. Slicker under the lips, and the usual pick if silver plating bothers your skin.
Final check

Product questions
Straight answers to the questions shoppers most often ask about this product.
Same .665 cup diameter. The 13 uses a rounder number 3 rim for flexibility and quick response; the 13C4's flatter number 4 rim trades some of that for endurance.
No. The cornet shank is shorter and tapers differently, so it will not seat correctly in a trumpet receiver.
The 11E has a large funnel cup built for a big round tone, and the 8E2's deep funnel is also aimed at cornet players. The 13C4 is the clearer option.
The .665 diameter works from student through professional. The sharper inner edge and flat rim suit a player with a settled embouchure more than a beginner.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.