The SportRack SR4883 Upshift Roof Mount Bike Carrier is an affordable bike transport solution that allows users to haul their bike atop their roof rack without having to remove its front tire. Designed for a single bike, it provides maximum stability and protection through a variety of features, including: an adjustable upright support element with an ergonomic locking knob, universal mounting hardware, an adjustable wheel tray and locking functionality, tool-free installation, and a premium black finish.