Racers competing for long races know proper hydration is important to maximize performance. Bell sells a drink tube kit (drinking system not included) that can be fully integrated into recesses located in the back of the helmet face piece including an area to fit a one-way valve for drinking systems. This allows for seamless integration without modifying the face piece or drilling holes in the helmet chin bar. The kit includes tubing, one-way valve and an L connector (does not include bite valve). Compatible with Bell full-face models including the HP7, HP5, RS7 Carbon, GT5 Carbon, GP3 Carbon, RS7 Pro, GT5 and GP3.