Two-Bottle rear mount hydration system clamps to standard round diameter bicycle seat posts (31.6mm or 27.2mm). Affix two CO2 cartridges with included brackets.
New reinforced design. Includes 2 lightweight Profile Design Kages. Includes CO2 mounting brackets. Allows for mounting of two 12g or 16g threaded CO2 cartridges. Fits 31.6mm to 27.2mm round diameter seatposts (shim included).
