Bridging the gap for non-traditional bike frames. The Saris Bike Beam LT (3060) is a bike adapter bar for bike rack that allows you to mount a bike with a step-through frame on a hanging bike rack. The bike bar adapter for bike rack is made of durable aluminum and features a quick-release lever for easy installation and removal. The bike rack adapter bar is compatible with most hanging bike racks, hitch racks, and trunk racks.