On leg-burning climbs, crazy fast descents and rolling technical terrain, RockShox's Reverb dropper post enables you to attack the trails like never before. Just hit the hydraulic remote lever for 100–125mm of infinitely adjustable up-and-down saddle movement without ever slowing down! The return speed is easily adjustable by turning a dial on the remote while the triple-lipped sealing system and sealed hydraulic hose keep dirt out for clean, consistent operation. There's also an included collar that limits travel to a preferred height setting. So go ahead and drop your seat a couple of inches for that 30-foot technical section, raise it for that long climb then lower it all the way and get back for that steep descent, without losing your flow.