When you roll up with your FrontLoader roof rack, all your fellow riders will be drooling with jealousy. The mounting design easily attaches to roof bars and allows the loading of bicycles without the need to remove any wheels. It does not grab painted surfaces, keeping bike finishes safe, and is compatible with disc brakes, and thru axles. Features: Fits factory, round and square bars with no adapters Zero frame contact protects bike finishes Lockable to crossbar and bike to rack (lock cores sold separately) Adjusts to fit 20" bikes up to 29'ers Specifications: Dimensions: 56" x 7" x 7.5" Max Crossbar Spread: 42" Minimum Crossbar Spread: 16" Max Capacity: 40lbs Weight: ~13lbs