What’s a Dropper on a Mountain Bike and Why Do You Need One?
A dropper on a mountain bike is a seatpost that can be adjusted on-the-fly while riding to raise or lower the saddle height. This allows the rider to quickly and easily transition from climbing to descending or technical riding without having to stop and manually adjust the seatpost height. Dropper posts are considered an essential feature on modern mountain bikes and can greatly improve the rider’s overall control and speed on the trail.