The CURT aluminum bike rack #18088 is designed to be the ultimate in versatility, featuring a lightweight and highly adaptable design. The bike rack itself mounts onto any industry-standard 2-inch x 2-inch receiver and securely locks into place with a built-in anti-rattle, key-operated shank. Once in place, the adjustable cradles accept a wide variety of bike sizes and styles, including wheel diameters up to 29 inches, fat tires up to 4 inches wide and e-bikes. This aluminum platform bike rack weighs only 45 pounds and can accept up to two bikes and 130 pounds in weight capacity. NOTE: For use with any frame-mounted 2" class 3 or higher trailer hitch receiver. Clamp-on bumper receivers and traditional 4" square bumpers should not be used to mount bike racks. Do not exceed receiver weight limits.