When it comes to adventure, they say the more the merrier, which is why Kuat created the Add-On accessory for their NV 2.0 rack, which lets you go from carrying 2 bikes on the back of your car to four in no time. Just like the standard cradles that came with your NV 2.0 rack, the Add-On includes an adjustable front tire cradle system, fully integrated cable locks, and is Trail Doc compatible.