Detail 01
16.4mm cup diameter
Mid-size for this line. Narrower than the 3 and 2, so less lip sits inside the rim.

Independent shopping perspective
Silver-plated cornet mouthpiece, Denis Wick Classic size 4: 16.4mm cup, 5.27mm rim, 4.58mm throat, open backbore. For players who want a settled, centered 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 for this line. Narrower than the 3 and 2, so less lip sits inside the rim.
Detail 02
Wider than the 2 or 3. Pressure spreads over more lip, which helps on long playing sessions.
Detail 03
The widest throat in the Classic line. Air moves freely, so you have to feed it more air.
Detail 04
Less resistance than the V-type B models. Bigger, rounder sound, but less focus built in for you.
Detail 05
The plating is what your lip contacts. It changes feel and grip, not the cup or rim dimensions.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
No. It is a cornet mouthpiece with a cornet shank and will not seat correctly in a trumpet receiver.
The 4B has a 16.5mm cup, 5.17mm rim, 4.27mm throat and a V-type backbore, so it plays tighter and more focused. The 4 is open and free blowing.
Same 16.4mm cup and 4.58mm throat. The 4W's rim is 5.55mm instead of 5.27mm, giving more surface on the lip for endurance.
The 3 steps up to a 16.75mm cup with a 5.05mm rim and the same 4.572mm throat, and the 2 goes wider still at 17mm.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.