The Kuat NV 2.0 Base 2″ Add-On is an extension for the NV 2.0 Base bike rack, allowing you to carry one or two additional bikes. It features a tool-free installation system and a foot lever that allows you to tilt the rack down for easy access to the rear of your vehicle. The rack can accommodate wheel sizes from 20 to 29 inches, with tire widths up to 4.8 inches. The NV 2.0 Base Add-On also includes a built-in cable lock and a front tire ratchet system for added security and stability while transporting your bikes.