Detail 01
.650 inch cup diameter (16.51 mm)
Mid-size in the Standard line. Same rim as the model 11, so switching between them changes cup, not lip placement.

Independent shopping perspective
Silver-plated trumpet mouthpiece. Model 11 rim at .650 inch with a shallower A cup — for players wanting upper-register support without changing rim feel.

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 in the Standard line. Same rim as the model 11, so switching between them changes cup, not lip placement.
Detail 02
Less cup volume than the model 11. Notes speak faster up top; the low register gives up some body.
Detail 03
The common throat across the Standard line. Tighter 27-throat A-cup models add resistance for dedicated lead work.
Detail 04
Same rim, but the AX has a 27 throat and x-backbore developed for Schilke piccolo trumpets.
Detail 05
Same .650 diameter, but the C2 uses a slightly rounded number 2 rim contour — a different edge feel.
Detail 06
Standard plating over brass. Durable and easy to clean, with rim wear showing after years of use.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
The rim size and contour are similar. The 11A has a shallower A cup, which supports the upper register while trading away some volume of tone.
It has the shallow cup but a standard 26 throat. Models built specifically for lead, like the 13A4a, pair the A cup with a semi-flat number 4 rim and tight a-backbore.
A shallower cup reduces volume behind the lip, which generally makes the upper register easier to reach. It will not replace air support or embouchure development.
No. It has a trumpet shank. For cornet, the 11E has a large funnel-shaped cup intended for that instrument.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.