Detail 01
Backbore only
This is the lower half. It threads onto a Warburton top, which is bought separately.
Product detailSKU #1275776906581
WarburtonTwo-Piece Tenor Trombone Mouthpiece System in Silver 1 Backbore Only
Independent shopping perspective
The Korena take
The backbore half of Warburton's two-piece tenor trombone mouthpiece, in silver, size 1. For players already in the Warburton system who want a second backbore.
Strong match
Who this is for
- Warburton users adding a second backbore to an existing top
- Players who want to change blow without changing rim feel
- Doublers swapping backbores between horns or gig types
Consider the trade-offs
When to look elsewhere
- Anyone without a Warburton top — this alone will not play
- Players wanting one fixed, sealed mouthpiece with no parts
- Beginners still settling on a basic rim size
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
Rim and cup live in the top; throat and taper live here. You change one without touching the other.
Detail 03
Size 1
Backbore numbering sets the taper. It changes resistance, response and how the upper register centers.
Detail 04
Silver finish
Standard plating. Smooth on the chops and easy to clean, but it will show wear with heavy use.
Detail 05
Tenor trombone scale
Sized for tenor shanks. Not intended for bass trombone or small-shank alto instruments.
Final check
Know before you order
- 01No top included. You need a matching Warburton top to play it.
- 02Confirm your horn takes a tenor shank before ordering.
- 03Threads must be kept clean — grit makes the two halves seat poorly.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I use this on its own?
No. It is the lower half of a two-piece mouthpiece. You need a Warburton top screwed onto it before it will play.
02Will it fit my existing Warburton top?
Yes, if the top is a Warburton trombone top. The system is designed so any top threads onto any backbore in the same range.
03Does the backbore change how the mouthpiece feels on my lips?
No. Rim contour and cup depth are in the top. The backbore changes resistance and response, not the feel against your face.
04Is this for bass trombone?
No. It is a tenor trombone mouthpiece backbore.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Silver
