Seasucker – Monkey Bars – Folding. Our new roof rack system designed for extreme versatility & portability. The Monkey Bars are 48″ round aluminum cross bars that allow for a multitude of attachments, such as kayak, ski, board, bike & cargo. Powered by 6″ SeaSucker vacuum cups (4 up front and 2 in the rear), the Monkey Bars fit on just about any car with a roof. Have a wide or narrow roof? No worries, the vacuum cups can be moved to any position on the bar to ensure a perfect fit for any vehicle. Our folding option allows bars to break down from 48″ to 24″ for travel and storage.