built and installed in 25 minutes. got the addon, but havent used it yet. locks are great for the hitch, however, the cable locks are too short, a wheel usually has to be compromised with 2 bikes on. i put it on my 2013 Jeep Rubicon, and the spare tire is too wide to fold up the rack. just got a hitch extension and that problem is solved. now the hiccup is that i need 2 locks, one for the new hitch extension and one for the rack. waiting to hear from kuat to see if the keys that came with the rack can be used with another lock, so i only need 1 key for all locks. looks awesome and is seen on truly outfitted trucks and at good shops. way better than thule or yakima, as my friends and i have used both with disappointment compared to this beast of a rack.