The Benno High Rail rack add on extends the usefulness of the Utility Rack to provide additional stability for bulkier loads or older children. - Make sure that no parts of the body or clothing come near moving parts on the bicycle, such as chain, spokes, tires or brakes Compatible with: - Categories: Boost EVO 3, Boost EVO 2, Boost EVO 1, Carry On - NOT compatible with Boost EVO 4 and later!