The AX6 was our second generation of the AX line, and it’s huge popularity had us looking for more ways to push the design further. With feed back from customers we created the AX6-R, Featuring a slight concave to the spokes giving a deeper lip look, and we wanted deeper colors for the red and a brighter silver color. All these changes are available in the 26×14 AX6-R design, and continues to lead our future designs!