Austin Custom Brass Backbores All ACB tops and backbores utilize the now universally accepted "Warburton" threads, making them compatible with almost every other maker's modular components! Check out our mouthpiece sizing spreadsheet to see which...

KCTC    Prototype  C trumpet   Assembled in Chicago by Kyle Lambert,  owner of KCTC (Kyle's Custom Trumpet Company... formerly the Kansas City Trumpet Company)   This has a NY 229 Bell style  and  "EB" ...