Bass Trombone Mouthpieces

Model Number System

Standard Series

Model No. Rim Inner Diameter (mm) Throat
(mm)
Characteristics
BL-58L 26.84 7.25 Medium cup and rim for easy playability through the low and middle registers. Crisp attack with outstanding flexibility.
BL-59L 27.22 7.25 Relatively thin rim. Rich sound even on pedal tones. Voluminous cup for solid lows and plenty of power.
BL-60BL 27.83 6.92 A German-style combination of fairly thick rim with relatively shallow cup. Excellent flexibility. Easy playability and clear tone in the middle and low registers.
BL-60L 28.25 8.10 Very deep cup with a large throat and backbore. Powerful, deep, low tone. For advanced players.
BL-61D4L 28.72 8.00 The largest rim inner diameter in the Yamaha trombone mouthpiece lineup, giving it great response and the ability to produce excellent tone at high volumes.
  • *The last “L”: Large Shank

GP Series

Model No. Rim Inner Diameter (mm) Throat
(mm)
Characteristics
BL-59L-GP 27.22 7.25 Relatively thin rim. Rich sound even on pedal tones. Voluminous cup for solid lows and plenty of power.
  • * “L”: Large Shank