Flatline Van Company UN1135B Universal Rear Tray Mount Storage Box/Bike Rack

The Rear Storage Box Bike Rack Adapter is an aluminum topper that mounts to the Rear Storage Box or Rear Storage Box Small, providing a platform for up to two tray style bike racks on the rear doors of your van. Compatible with the Kuat Piston SR Bike Tray and other single-bike bike trays. Installs in under 30 minutes, drilling required.