If you're riding a bike with a 20mm thru-axle, or a full-suspension mountain bike, or even have kids bikes without a quick release front hub, the T2 makes loading bikes easy and ultra secure.  With the included STL2 and two One-Key Lock Cores you can lock the rack to the car and your bikes to the rack.  This upright mount hitch bike rack is the perfect solution for your rear mount bike rack.