This Top Tube Adaptor from LifeLine is engineered to create a false top tube between your bikes seatpost and steerer, so you can mount your bike to car bikes racks. It’s ideal for use with for urban step-through bikes, low slung geometry mountain bikes and city bikes that don't have a horizontal top tube.
61.5 x 7.5 x 2.2cm
61.5cm - 82cm
Outer Clamp Dimensions:
8.5 x 3cm / 9 x 6cm
Creates a false top tube for the mount of city and step through bikes to car bike racks