Mavic deemax ultimate mtb rear wheel the deemax ultimate holds an iconic place in the history of downhill mountain biking developed with and used by some of the fastest racers on the world cup circuit deemax ultimate is among the lightest of downhill wheels taking sam hill to the top step of the podium twice during the 2014 season featuring mavics distinctive yellow paint the alloy rim has been developed using their patented ism weight reduction technology this technology creates a central