The Kuat rack was born out of Luke Kuschmeader's and Brian Atkinson's frustration with their current bike rack. Like most racks today, they were heavy and clumsy and wobbled after you mounted them to your receiver hitch. Plus they hurt like heck if you dropped them on your toe.
These two dudes decided that they needed a lighter rack. And they delivered. The Kuat Alpha is so light - a mere 13 pounds - that you can easily carry it with one hand. (Ok, with a couple of fingers on one hand)
Small women love using the Kuat because they are so light and for the first time ever they are not dependent on the men in their lives to install the bike rack for them.
The Kuat adds a simple little joint to the receiver bar, allowing the entire rack to fold up compactly. This allows the bike rack to be stored in small spaces - like the trunk of your car.
Most other companies don't build their racks this way because they tend to wobble. Kuat used a small tightening screw to ensure it is secure.
Speaking of stability, Kuat uses a basic wedge-type tightening bolt system like you find on most high-end receiver bike racks to make sure that their rack is secure with no wobbling.
I always loved it when a customer asked for help installing a Kuat rack. No tools. Just slide in and turn a knob. It is awesome.
Also one of the key features of the Kuat design was their stability strap design. They brought in a lot of different strap models during the prototype phase to get opinions on it. In the end, Luke and Brian designed a strap that was small enough to work on any bike but aggressive enough to keep the bike from swaying.
I hate swaying bikes.
Ok, so you don't want to have your bikes stolen, either. The Kuat Alpha comes with a locking hitch pin as well as a locking braided cable to keep the bike locked to the rack.
Only the most determined thief is going to touch that.