Item #0123561 Model #1240L-T

XO 1240L-T Professional Series Bass Trombone with Thru-Flo Valves Lacquer Yellow Brass Bell


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Big bore, big sound.

The XO 1240L-T bass trombone is designed with the advancing player in mind, featuring an independent valve system with Thru-Flow rotors pitched in Bb/F/Gb/D. The 9.5-inch handcrafted bell is available in two separate options: Yellow or Rose brass with excellent presence. The 1240L-T also features three interchangeable leadpipes, two yellow brass and one sterling silver, to allow the player to customize their instrument for optimum performance.
Instrument Type
  • Type: Bass Trombone
  • Tuning: Bb/F/Gb/D
  • Level: Professional
  • Bore: .571-inch
  • Leadpipe: 3 interchangeable pipes
  • Bell: 9.5-inch
  • Bell Material: Choice of yellow or rose brass
  • Handslide Weight: Standard
  • Handslide Material: Yellow brass outer slide tubes
  • Handslide Crook: Nickel-silver
  • F-Attachment Wrap: Open
  • F-Attachment Valve: Thru-Flow rotors
  • Valve System: Independent
  • Finish: Lacquer
  • Case: Yes
  • Mouthpiece: Yes
  • Mouthpiece Shank: Large


  • Available in lacquer finish with yellow brass bell (1240L-T) or rose brass bell (1240RL-T)
  • Independent dual Thru-Flow valves in Bb/F/Gb/D with open wrap
  • 9.5-inch bell in yellow or rose brass
  • Standard yellow brass hand slide

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer, and to cause birth defects or other reproductive harm. For more information go to