Cable-actuated under-bar lever compatible with MatchMaker and Shimano I-Spec II;Infinitely adjustable air-sprung hydraulic locking cartridge with 20 percent reduction in compression force;Pierced head design allows riders to run longer travel post with shorter overall lengths;The 2-bolt rocker head with micro adjustment allows for easy saddle tilt adjustment;Internal cable routing keeps housing tucked away and free from moving wheels;Includes cable, housing and 1x under-bar remote lever;On-Bar Universal Lever sold separately;The frame must be compatible with internally routed seatpost routing;