Mercer & Barker Tenor Trombone Mouthpiece
Stunningly beautiful BSP Trombone Mouthpiece. Manufactured from high grade brass with a silver plate coating polished to perfection.
Other sizes may be available for special order. For any enquires on special ordering or a specific size please contact [email protected]
Mercer and Barker mouthpieces are british made featuring precision engineering at its finest. Aesthetically exquisite, unique designs that sit comfortably on the face, enhance and develop your core sound, adaptability and intonation across all registers. Mercer & Barker Ltd was created as a company and launched in the Autumn of 2019 and is the brainchild of Carl Mercer and George Barker, a collaboration of two Tuba players and friends striving to design, develop and create brass instrument mouthpieces of the highest quality using the best of British precision engineering.
| Model | Cup Diameter | Throat | Rim | Comparison |
|---|---|---|---|---|
| MB5-ET (Round Rim) | 25.70mm | 7.28mm | 6.85mm | Bach 4.5G / SM5 / SM5U / 5AL |
| MB4-ET (Round Rim) | 26.0mm | 7.38mm | 6.70mm | Bach 4G / SM4 / SM4U/ 4AL |
| MB4.5G “Viper” | 25.60mm | 7.40mm | 6.75mm | 4.5G |
| MB6G | 25.20mm | 7.10mm | 6.95mm | Bach 6G |
| MB6.75G | 24.85mm | 7.10mm | 6.90mm | |
| MB2GS "Fumeaux" | 27.00mm | 6.80mm | 7.20mm | Lionel Fumeaux Signature Tenor Trombone Mouthpiece |
| MB4G-JP “Dragon” | 26.40mm | 7.40mm | 6.75mm | 4G |
| MB5G “Raptor” | 25.40mm | 7.20mm | 6.85mm | Bach 5G / Greg Black 5G / DE 5G |
| MB3-ET (Round Rim) | 26.40mm | 7.48mm | 6.50mm | Bach 4G / SM3 / SM3U / 3AL |
| MB4.75G | 25.50mm | 7.40mm | 6.80mm | |
| MB4.25G | 25.85mm | 7.40mm | 6.90mm | In Between a 4G and 4.5G |
| MB5GS "Raptor" Small Shank | 25.40mm | 7.40mm | 6.85mm | Bach 5G / Greg Black 5G/ DE5G with a small shank |
| MB6GS Small Shank | 25.20mm | 7.10mm | 6.95mm | Bach 6G small shank |
| MB6.75GS Small Shank | 24.85mm | 7.10mm | 6.90mm | 6.75G Small Shank |

