Detail 01
It's a top, not a whole mouthpiece
This is the rim and cup section only. It threads onto a separate backbore to make a playable mouthpiece.

Independent shopping perspective
The top half of Warburton's two-piece trumpet and cornet mouthpiece system, size 7, silver-plated. For players who want to swap cups without changing backbores.

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
This is the rim and cup section only. It threads onto a separate backbore to make a playable mouthpiece.
Detail 02
Identifies the cup. Other numbered tops thread onto the same backbore, so you change feel without changing the shank.
Detail 03
The top carries over between horns as long as you have the matching backbore for each instrument's receiver.
Detail 04
Standard plating that wears at the rim over years of play. Can be replated. Some players react to silver on the lip.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
No. It's the cup section of a two-piece mouthpiece. Without a backbore threaded on, there's nothing to seat in your horn's receiver.
The top does. The backbore is what matches the instrument, so you need the correct backbore for whichever horn you're playing.
It threads onto Warburton backbores. It is not designed to mate with other manufacturers' mouthpiece parts.
To change cup size or rim feel while keeping the backbore you already play. It's cheaper than buying a full second mouthpiece.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.