Topeak beam rack rx with side racks a lightweight seatpost rack with included side frames for use on road and fitness bikes compatible with all rx trunk bags 15lbs carrying capacity includes rubber bungees and clip for redlite features side frame equipped rubber bungee clip for redlite bag compatibility rx series clamp fits dia 254 31 8mm shims included material aluminium max weight capacity 7kgs size 46 x 115 x 20 5cm weight 545g nb v type model pictured buy tope