X fusion hilo dropper seatpostx fusions hilo dropper seatpost will enable you to dominate your local trails like never before as at the touch of a button youll be able to rise your saddle up to blast up the climbs and drop it out of the way for those challenging descents the hilo provides you with remote operated smooth hydraulic operation that can be stopped at any point in its travel the saddle clamp has a wide adjustment range so you can dial in the perfect position for comfort and power