The NEW Xstream Compatible backbore! Now you can use the patented Xstream "Power Chamber" design with any mouthpiece that uses a Warburton threaded backbore! Give yourself the Xstream Advantage without changing the comfort of your favorite top. Give your current trumpet mouthpiece setup more power with less effort! Improve your upper register! Better your flexibility! Increase your endurance! The Xstream Compatible backbore will even help your current trumpet mouthpiece maintain outstanding response, intonation, a constant pitch center, and a brilliant solid core sound!

Backbore Models

Cup Models

XXX - The "Triple X" backbore will give you a tight core to the notes with greater projection and a slightly brighter sound than the XXF backbore. This is our benchmark backbore for lead players and rockers. This backbore lets your sound project further with less effort.

XXF - The "XXF" backbore was designed for players who demand a more traditional sound! The XXF backbore lets you move more air than our XXX backbore, giving the player a more robust traditional sound while maintaining a bright and powerful upper register.

XXD - The "XXD" backbore was designed for players who demand an even darker traditional sound! The XXD backbore allows the sound to roll off the end of the bell creating a wider darker sound than our XXF backbore.

NEW S.S. Backbores - Stainless Steel Backbores are now an available option for your Xstream 2pc backbores. They come with the Stainless Steel finish and can be added to your order during check-out for an additional $25.