The RampUp 8002737 is designed to attach to the StageTwo line of Platform Bike Racks to make loading and unloading easier than ever - especially for those heavier E-bikes. The Ramp Kit is strong, durable and crossion resistance with its aluminum construction. The RampUp Kit is increbily easy to use by simply interlocking the ramp into the end slots on the StageTwo bike trays. With the Ramp Kit mounted, simply roll your bikes up the ramp to load and down the ramp to unload. The Ramp Kit does have to be remove during transportation.