My SUV has a two-inch hitch receiver, so the Yakima HangTight 4 works without an adapter ... The HangTight works with flat-bar and drop-bar bikes, but it seems to work best with flat-bar mountain ...

Unfortunately, there's nothing more unattractive than a trailer hitch hanging below the rear bumper. Early Classic Enterprises (ECE) has solved this dilemma with its hidden receiver hitch kit.