The internally routed post uses a mechanical lock to keep the post in place and a low-pressure air spring to return to post to maximum extension. Due to the lack of oil and static seals; the post operates in below-freezing temperatures making it a good choice for fat bikes and cold weather riding. - Hunter Head two-bolt design fits standard and 7 x 9 mm Carbon Rails - Actuation cable easily (and tool-free) disconnected with Quick Connector for easy post removal. Uses standard shifter cable and housing - Extreme changes in temperature may require a user to follow the tool-free brake reset procedure for optimum function - Adjusting the air pressure will change the return speed of the post. 20-40 psi range - Remote sold separately