Detail 01
Deep cup
More internal volume, so the tone darkens and rounds. Takes more air and softens the high register.

Independent shopping perspective
Deep-cup, large-diameter flugelhorn mouthpiece with a US shank. For players who want maximum warmth and body and already have the chops to feed it.

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
More internal volume, so the tone darkens and rounds. Takes more air and softens the high register.
Detail 02
The widest in this series. More lip vibrates, giving a bigger sound but tiring you faster.
Detail 03
Narrowest rim here. More flexibility and slotting freedom, less cushion over a long set.
Detail 04
A wider throat than the shallow-cup models, letting more air through for volume at the cost of resistance.
Detail 05
Less back-pressure. The sound spreads and blooms rather than focusing into a narrow core.
Detail 06
Determines whether it seats in your leadpipe at all. European-shank horns need the F-series equivalents instead.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Only if your horn takes a standard USA shank. Many flugelhorns use a medium European shank, which needs the F-series versions of this line instead. Check the receiver before ordering.
Cup diameter and rim width. The 2FL is widest at 17mm with the narrowest 4.88mm rim; 3FL is 16.75mm, 4FL is 16.50mm with progressively wider rims.
Not the easiest starting point. The deep cup and 17mm diameter demand steady air and embouchure strength. A smaller diameter in the same series is a gentler entry.
Plating mainly affects feel and wear resistance on the lips. Cup depth, diameter, throat, and backbore are what shape the sound here.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.