After owning both a first generation Sportsworks and Thule T2 I was excited to hook this up and see how it worked. Downhill rig, 29er, and two road bikes easily fit with a very wide range of tire sizes. The extension is light and easy to assemble and remove. Two bike configuration is def lighter than the competition. The four bike configuration is heavy, but compared to my old racks it is a huge improvement. I have yet to use the bike stand, but I like the option. Lastly, it still only slows down the smarter thieves, but I like the integrated locks. Note that the keys for the add-on are different than the original.