Mouthpiece header3

  • Gold Mouthpiece 250 250
    L4 Cup: 26.0mm Throat: 7.2mm
  • Gold Mouthpiece 250 250
    L4 B.B Cup: 26.0mm Throat: 7.1mm
    Designed with Brett Baker. Shallower cup than the L4 and also slightly flatter rim. Many players find this model to be very similar to the classic Mount Vernon 4G.
  • Gold Mouthpiece 250 250
    L4 1/2 Cup: 25.8mm Throat: 7.1mm
  • Gold Mouthpiece 250 250
    L5 Cup: 25.5mm Throat: 7.0mm
  • Gold Mouthpiece 250 250
    L5 B.B Cup: 25.5mm Throat: 7.0mm
    Designed with Brett Baker. Shallower cup than the L5 and also slightly flatter rim. Ideal mouthpiece if you're a principal player or soloist.
  • Gold Mouthpiece 250 250
    L5 M.D. Cup: 25.5mm Throat: 7.1mm
    Designed with Mike Dease. More open throat and deeper cup than the L5. This is ideal if you're looking for a fuller sound with a more open response, but with a 5 sized rim. Very open feel across all ranges.
  • Gold Mouthpiece 250 250
    L5A.H Cup: 25.5mm Throat: 7.2mm
    Fractionally deeper than the 5MD, with a slightly increased backbore taper.
  • Gold Mouthpiece 250 250
    L6 1/2 Cup: 25.1 mm Throat: 6.4mm


The Michael Rath mouthpiece range was introduced in 2004 after extensive research, development and testing. Our goal was a very simple one - to create a range of mouthpieces that not only would perfectly complement our own instruments, but also would be excellent mouthpieces in their own right.

All Rath mouthpieces have had substantial input from professional players in their design and many of our models are “Signature” mouthpieces, designed in collaboration with Rath trombones artists such as Mark Nightingale, Mark Frost, Bert Boeren, Marc Godfroid, Mike Dease and Brett Baker.

“Michael Rath makes not only great trombones, custom tailored to match your goals and needs as a musician; he’s also been developing a line of mouthpieces along with the testing and input of some of the world’s top trombonists that match the quality of his instruments on a plug-and-play level.  I’m really happy to introduce the RATH S5 A.H., Andy Hunter model mouthpiece; my new standard for all musical situations.” Andy Hunter.

Rath mouthpieces feature a semi heavy outer shape, designed to bring the beneficial features of heavy weight mouthpieces, such as added projection and core to the sound, without reducing the feedback to the player, as can be the case with heavy weight designs.

Visit our online shop to buy from our mouthpiece range