Hollywood Recumbent Trike Adapter Car Rack For Hr1000/Hr1000R/Hr1450/Hr1450R/Hrt220Trike adapter for Sport Rider rack. 45906 recommended for use with most recumbent style trikes, fits one trike only. 45010 recommended for use with tadpole, delta, and adult style trikes, fits one trike and one bike. Product Dimensions:24 Length x 18 Width x 12Heigh..