Because they lack a top tube, bikes with step-thru frames or sloping top tubes can sometimes by challenging to mount on car and truck racks. This adapter from Hollywood is a "substitute" top tube that can quickly be installed on your step-thru bike, allowing it to work on the style car and truck racks where the top tube rests on an arm or hook.The telescoping design allows the Bike Adapter to quickly adjust to various frame shapes and sizes including step-thru, ladies, children's, cargo, and even full suspension bikes. It attaches to the seatpost and handlebar stem and is easily removed when you arrive at your destination.adjusts from 21 - 28" longprotect your bike's finish with non-marking plastic clampsrust-resistant, sturdy steel with powder coat finishmax weight capacity 35 lbs when used on hanging style rackswhen used on the Hollywood Sport Rider for Electric Bikes rack, weight limit is 80 lbs
