So you've just picked up a sweet new rig, and you need a secure way to transport it to and from your favorite riding spots. There are plenty of options out there on the market, but few of them are as secure as the Swagman Semi 2. 0 Locking Bike Rack. This versatile rack works with both 1. 25in and 2in receivers, making it easy to mount it up to any of your hitch-equipped vehicles. It also fits virtually any bike in the 20 - 29in wheel size range without making any contact with the frame, meaning your expensive carbon frames are safe with this design. The only requirement is that the wheelbase is between 37 and 50-inches, and the total weight doesn't exceed 45lb per bicycle.