Designed for demanding triathletes this rear hydration system allows you to put two bottles to the back of your saddle or a bottle and a tool bottle. Includes universal rail mount bracket and 2 bottle cages the Z2 and Z2i as well as the screws supplied for installation. The included Z2i cage includes 2 mounting points for CO2 inflation tools. Side-opening bottle cages allow easy and quick access to the bottles

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