The Rhino-Rack Backbone mounting system for 2017–2019 Ford F-250, F-350 and F-450 Super Crew Cab models uses five bases per side to create a reinforced interior roof structure. Designed to accept a Rhino-Rack Pioneer system on top, it provides a stable platform for mounting modular rack components and carrying rooftop equipment with improved load distribution on the vehicle roof.
Rhino-Rack 17-19 Ford F-250/350/450 Super Crew Cab 5 Base Backbone Mounting System