Detail 01
Small shank
Fits the narrower receiver used on student and small-bore tenors. It will not seat in a large-shank slide.
Product detailSKU #1274115059519
BachSmall Shank Tenor Trombone Mouthpiece 5GS
Independent shopping perspective
The Korena take
Small-shank tenor trombone mouthpiece with a V-shaped throat. A mid-large rim for players on small-bore tenors who want a deeper, rounder cup.
Strong match
Who this is for
- Small-bore tenor trombones with a standard small-shank receiver
- Players wanting more depth than a stock student piece
- Low-register parts where an open throat helps the bottom
Consider the trade-offs
When to look elsewhere
- Large-shank bass or symphonic tenors — the taper is wrong
- High, loud lead work better served by a shallow cup
- Players settled on a smaller rim who cannot afford a reset
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
V-shaped throat
Cone-like taper instead of a bowl. Rounder, more open low register and a little less edge up high.
Detail 03
Size 5
Mid-large rim diameter in Bach numbering. Lower numbers are wider, so a 5 is bigger than a 6 or 7.
Detail 04
GS model designation
Bach's code for this cup and backbore combination in small-shank form. Rim, cup and throat are fixed together.
Final check
Know before you order
- 01Mouthpiece only — no pouch, brush or shank adapter included
- 02Confirm your receiver takes small shank before ordering; the two do not interchange
- 03Adapters exist but alter the taper and change response
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How do I tell if my trombone takes a small shank?
Small-bore tenors, typically .500 to .525, use small shank. Large-bore tenors and bass trombones use large shank. Compare your current mouthpiece shank to the receiver opening.
02Is a 5 bigger or smaller than a 6?
Bigger. In Bach numbering a lower number means a wider rim diameter, so a 5 is a step up in size from a 6.
03What does the V throat actually do?
It opens the passage below the cup in a cone rather than a bowl. That generally makes the low register speak more freely and softens the attack up top.
04Can I use this on a bass trombone?
No. Bass trombones take large-shank mouthpieces, and this cup is far too small for bass parts anyway.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsPlayability
- Neck Shape
- V
