Receiver hitch for bike rack
 

Recently purchased a 2016 CTS and am need of a way to transport my bike. Do not want a roof rack and prefer something that doesn't strap on a potentially affect the finish. I figure my only option is to have a receiver installed and run a hitch mount rack. Looking for feedback on a hitch receiver, preferably something that isn't too obvious when not in use.

Thanks for the help and feel free to post up about any other options I may not be considering.