Topeak QR BeamRack RX Bicycle Rack (V Type) A lightweight seatpost rack with included side frames For use on road and fitness bikes Compatible with all RX Trunk Bags, 15 pound carrying capacity Includes rubber bungees, light clip, and side frames for RX DXP Trunk bags Dimensions: 16.9 by 4.5 by 9.1 inches (L x W x H)