Topeak MTX Beamrack EX Rack. It's great when you can transform your regular bike into a commuter mobile or a grocery getter in about 30 seconds. Topeak's MTX Beamrack EX is a one piece rack that attaches to your seatpost via a simple quick release clamp and is compatible with Topeak's QuickTrack technology literally slide the bag on and go. If you don't have the Topeak Bag, no worries you can bungee your cargo on like on a regular rack.
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