* BlipBox is the control module that turns your triathlon or time trial machine into a wireless missile* Connected to SRAM RED eTap Blip remote shifters, the BlipBox manages the wireless shifting via AIREA, SRAM’s proprietary communication protocol, allowing immediate shifts from nearly any aero position* Compatible with SRAM RED® eTap derailleurs, and Blips* BlipBox mount included* Replaces standard drop bar shift levers* Up to two positions per side (4 total Blips)