Zipp SL Speed DI2 Battery Mount for 27.2 Seatpost Features
The Zipp SL Speed Seatpost Di2 Battery Mount neatly tucks inside of Zipp's Speed Seatpost for safe and sound operation of your Di2 battery without having to worry about it succumbing to the outside elements. It's available in both 27.2 and 31.6-millimeter diameters, so you can use it with both your road and cyclocross bikes.