Detail 01
Backbore only
This is the shank end that goes into the horn. You supply the top with the rim and cup.
Product detailSKU #1275776906505
WarburtonTwo-Piece Bass Trombone Mouthpiece System in Silver 1 Backbore Only
Independent shopping perspective
The Korena take
The backbore half of Warburton's two-piece bass trombone mouthpiece, in silver. For players already on the system who want to change their throat/backbore end.
Strong match
Who this is for
- Warburton system players swapping backbores between doubling gigs
- Pairing with a top you already own
- Building a bass trombone setup one half at a time
Consider the trade-offs
When to look elsewhere
- Anyone without a Warburton top — this will not play alone
- Players wanting one fixed, sealed mouthpiece with no parts
- Tenor trombone or euphonium players
What matters in use
The specifications, translated
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 02
Two-piece system
Tops and backbores thread together, so one backbore serves several rim and cup combinations.
Detail 03
Bass trombone sizing
Built for the large-bore bass trombone shank. Not a tenor part.
Detail 04
Silver plating
Standard plating on brass. Slightly grippier than gold and easy to keep clean with a wipe after playing.
Detail 05
1 backbore
One of several backbore options in the range. Which one you want depends on the top and the horn.
Detail 06
$85.99 for half a mouthpiece
Budget the top separately. A full playable setup costs this plus the top's price.
Final check
Know before you order
- 01No top included — you cannot play this on its own
- 02Confirm your existing top is a Warburton bass trombone top
- 03Threads need to be kept clean; grit there causes a poor seal
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I play this by itself?
No. A backbore is only the lower half. It has to be threaded onto a Warburton top with a rim and cup before it will play.
02Will it fit my tenor trombone?
No. This is the bass trombone backbore, built for the larger bass shank. Use a tenor part for a tenor horn.
03Does it work with any Warburton top?
It threads onto Warburton bass trombone tops. Match the parts within the bass trombone range rather than mixing across instrument sizes.
04Why buy just the backbore?
Most players already own a top they like. Buying backbores separately lets you change the horn end without replacing the rim you are used to.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Silver
