Saris Modular Hitch System (MHS) is a future-proof highly customizable modular hitch platform system consisting of a Base unit and a wide assortment of Bike carriers and other gear carrying accessories. Base accommodates 3 1-BIKE DUO bike tray + 1 1-BIKE DUO ADD-ON bike tray ( Base Only - Trays sold separately). Convenient rear of vehicle access with tilting base activated with easy to use outboard handle. Compact storage on vehicle as base tilts up when not in use. Saris Hitch Tighter System locks and secures rack to vehicle with rock-solid hitch connection. Includes hitch lock plus additional 3 lock cores for use with MHS Accessories. Fully assembled and easy to install on vehicle. Fits 2` receivers