Whether you're shuttling your crew out for an epic day of riding or just can't decide which rig to take to the trails, the MTR Add-Ons have your back. This add-on is built with the same robust materials as the MTR rack, and these add-on trays are ready to roll out of the box. Compatible with the MTR 1-bike and 2-bike hitch rack, these add-on trays save you the hassle of buying a new rack to haul more bikes.