SRAM's Red eTap Clic Bar End Shift Buttons are the wired shifting solution for time trial and triathlon setups running the eTap AXS drivetrain, sliding into the end of an aero bar extension so you can actuate the derailleurs without moving your hands off the extensions. A simple indexing button placed at the end of an aero bar connects to the BlipBox and sends shift commands to the derailleurs, which means the wireless AXS derailleurs still handle the actual shift — the Clics and the BlipBox just replace the hoods as the input device. This 00.7018.308.000 version ships with 650mm wires, which is the longer of the two length options SRAM offers and gives you routing flexibility on larger TT frames or setups where the BlipBox is mounted further from the extensions.

Fit is the detail worth checking before you order. The buttons fit in the end of any extension with an inner diameter of 19mm to 20.5mm, so measure the ID of your aero extensions before committing. Most modern carbon extensions fall in that range, but older aluminum extensions and some clip-on setups run tighter or wider IDs that won't accept the plug. If yours fall outside that window, SRAM's Blips are the alternative — they mount to the outside of the extension with tape or bands rather than plugging into the end.

Ergonomically, you can shift with thumbs or fingers without changing position or grip, which is the whole point in a TT position where lifting a hand costs you aero and stability. The button sits flush at the end of the extension, so there's nothing catching wind. You get one button per side, wired to the BlipBox, which handles the shift logic — left button shifts one direction, right button the other, and hitting both triggers the front derailleur.... Read More