The redesigned Zero post offers no-slip saddle engagement and high adjustability by securing the rails with fore and aft bolts. Whether you're hitting rough singletrack or remounting in a hurry, this ensures the saddle stays exactly where you want it. - Carbon Construction with alloy clamps - Fore/aft adjustment bolts for precision adjustment and secure clamping - Zero offset - Length: 400mm - 200g (27.2x400)