Wahoo TRACKR RADAR Rear Light KWT These are 6 mm long

These are 6 mm long so they work perfectly with any bolt on single chainring that does not have threaded standoffs

No whispy bits that get stuck in your cluster or jockey wheels

Extreme compact design with high pumping volume

the "ZSG AGILE COMPOUND'' reduces rolling resistance by 12% and weight by 20g compared to the previous model

Wahoo TRACKR RADAR Rear Light KWT These are 6 mm long"Meet TRACKR RADAR, an all in one tail light and radar built to keep you aware, visible, and in control. With real time vehicle detection, adaptive lighting, and seamless integration with ELEMNT bike computers and the Wahoo App, it enhances your ride without adding distractions. Its sleek, road ready design, long lasting battery, and versatile mounting system ensure confidence in every mile. Stay alert, see whats coming, and ride with total focus.