Aluminum Ramp 4 ft. USA - Motorcycles Onto Trailers - 5244 MCDR Ramp 1,500 lb. plus - distributed center load capacity All aluminum, 6061 alloy construction. Lightweight, weighing only 30 lbs. Built-in extra center support for loading the heaviest bikes. Twice as many crossrods than normal ATV ramps, for safe footing Serrated crossrod design for awesome traction