The Thule T2 Pro X 2-Bike Add-On is an add-on to the premium Thule T2 Pro X platform hitch rack which allows for a 4-bike capacity. This hitch rack secure bikes quickly without frame contact with the frame-free ratcheting arm, eliminating the bike interference by adjusting side to side to create generous spacing between bike mounts. It is ideal for carbon frames, mountain, downhill, ebikes and fat bikes as it fits 20 - 29" wheels and up to 3" tires without adapters. Share the fun and keep exploring with the Thule T2 Pro X 2-Bike Add-On! | Thule T2 Pro X 2 Bike Add On