The rockshox reverb stealth seatpost mmx left provides every rider with unlimited seat height adjustability when yoursquore ripping through rolling terrain cranking the pedals one minute and getting off the back of the bike the next no seat height is just right however the all new reverb gives you the correct seat height whatever yoursquore doing it allows you to adjust for perfect comfort and maintain control of your return speed in a hydraulically actuated remote package this rocksh