Stay hydrated on and off the road. Aventon&';s carbon fiber water bottle cage is lightweight, sleek, and versatile making it a no-brainer for all your water needs. The Aventon Bottle Cage is available as a side-loader in both left and right orientations, and fastens using the standard cage mount bolts on your bike! No bolts on your bike? We also have an adapter available here. Specs Weight: 21.8g (0.77oz) Compatibility Compatible with Aventon electric bike models that have bottle cage mounts on the frame.