Evolution is simple. It’s a small change over time to adapt to the needs of the species. That’s what the Rhino-Rack Backbone is all about – the Evolution of your 4WD. The Rhino-Rack Backbone is fitted to the factory roof mounting points or directly to the roof of your vehicle and distributes the weight of your luggage more evenly through the body of your vehicle. It’s ingeniously simple and perfectly complements our full range of Pioneer platforms.