Inspiring your ride The TranzX adjustable seatpost equips air pressure actuation–freely and easily adapting your seat position according to the terrain you meet. The MICRO adjustment offers quick and easy seat positioning, with reliable and robust technology. Product details Remote actuated dropper post with Stealth internal routing and a clean look 31.6mm clamp size, 2-bolt head, available in 2 lengths Sizes: 360mm length/100mm drop, 425mm length/130mm drop and 450mm length/150mm drop Lever is not included - Bontrager Drop Line Universal Dropper Lever is recommended