Harrelson High Efficiency Valve Stems
Harrelson High Efficiency Valve Stems were specifically designed to add efficiency in three levels. Precision machined from solid brass, our valve stems are available in plain and stylized options. Sold in sets of 3.
Standard = noticeably increased efficiency over original aluminum stems
High = our highest efficiency stems available
Currently only available for Harrelson Trumpets made after 2010.
We will introduce our HEVS for Bach and Yamaha instruments in late November 2020 via a Kickstarter campaign.