Shimano 11-speed driver for Dynasis and Road

The rest of the time

Zero stack uppers press into head tube with very little stack height

Pure Flow Tube snaps to hanging hook to allow vertical hanging and drainage

Includes mounting hardware

Wahoo Fitness RPM Speed Sensor with Bluetooth/ANT+ - Closeout garminpromo Shimano 11-speed driver for DynasisWireless Bluetooth and ANT+ Cycling Speed Sensor The Wahoo RPM speed sensor is the sleek, magnet less solution for capturing cycling speed data. It easily mounts to your bike's front wheel hub, and the Bluetooth Smart and ANT+ dual band technology allows you to connect to and display data on both smartphones and bike computers. Tracking speed data has never been this easy.