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.
- Fits 31.6mm or 27.2mm round diameter seatposts (shim included).
