Rack up your bike: The handy TubeTop makes your bike compatible with most mast-style hitch racks; Works with bikes that have sloped top tubes, such as mountain bikes, cruisers and more
Simple and effective: Installs quickly and securely to your seat post and stem to adapt a wide range of bikes for transport
Highly secure: Keeps your bike mounted solidly on single and dual arm mounts; Oversized diameter tubing and anti-rotation inserts for greater stability
1 bike capacity: Use it with 1 bike weighing up to 45 lbs; Large molded collars are gentle with your bike stem and seat post
Wee got your back guarantee: Covered by our Limited Lifetime Warranty