Replacement Channels are available for the Articulating Mechanism. Replacements include the channel as well as new hardware.
There are two different Channels:
Channel A is used at the front of newer Articulating Mechanisms that have mounting provisions for NEXGen II Fixed Outriggers (sold 2017+). The forward protrusion provides extra support for the NEXGen II Fixed Outrigger Mount and a slightly different hole pattern ensures a rear channel can not accidentally be installed in its place.
Channel B is used at the rear of newer Articulating Mechanisms that have mounting provisions for NEXGen II Fixed Outriggers (sold 2017+).
Channel B was used at the front and rear of older Articulating Mechanism (sold before 2017). If your Articulating Mechanism has not been upgraded for NEXGen II Fixed Outriggers, you will need a pair of Channel B's.