THE PROBLEM:
Not all bikes have a “top tube”… but most bike racks need a “top tube” in order to do their job.

Which means that if you happen to ride a “step-through” (with no top tube whatsoever), a traditional “ladies” bike, or indeed any other style of bike with a very low or sweeping top tube, you’re going to need one of these.

THE SOLUTION:
A GripSport “Top-Tube Adapter” simply clicks into place between your seat post and handlebar stem and creates a top tube for your bike rack to use.