This Bach 1 1/4GM bass trombone mouthpiece is offered in pre-owned, excellent condition and presents a well-balanced option for players who find themselves between the familiar 1G and 1 1/2G sizes.
With a 27.5 mm rim diameter, the 1 1/4GM feels noticeably larger and more open than a 1 1/2G, yet not nearly as broad or demanding as a 1G. The medium-thin, well-rounded rim provides comfort and clarity without feeling bulky, making it suitable for extended playing sessions.
The .276 throat (shared with the 1 1/2G) offers a bit more control and focus compared to the larger .319 throat found on a 1G. In practice, this gives the player just enough resistance to add definition and edge when needed, while still supporting a large, full bass trombone sound.
Overall, the 1 1/4GM sits squarely between its neighboring sizes — bigger and fuller than a 1 1/2G, but more manageable and controlled than a 1G — making it a practical choice for players refining their setup rather than making an extreme jump in size.
Professionally cleaned and ready to play.
