Specialized Flux™ Expert Tail Light Seatpost Mount

Do you have more than one bike? Get the most out of your Flux™ Expert tail light by getting an additional seatpost mount for easy switching between your rides.

Includes bolt-on mounting bracket, three interchangeable rings to fit different seatpost sizes, and a 2.5mm Allen key.
Interchangeable rings will fit 27.2mm, 30.9mm, and Venge Aero seatpost.