The Rhino-Rack Backbone is a mounting system for your Isuzu M-UX. Connecting to your vehicle’s roof via 4 bases on each side, it allows for a Rhino-Rack Pioneer System to be fitted on top. This BackBone mounts by removing the factory flush/integrated rail to expose factory fixpoints in the vehicles roof to which the BackBone is installed with. All parts and hardware required to install are supplied.