Two weeks before launching its new deep section race wheel, the Hadron Ultimate 680, Swiss Side received some bad news. The UCI had announced that, come January 1st 2026, the rim depth for its sanctioned road events would be limited to a maximum of 65mm. As the name suggests, its new hoops measured 68mm.
Given that the Swiss aero experts had spent more than two years developing the Hadron Ultimate 680, it was, as it described “a major and unexpected and extremely costly blow”. The Swiss aren’t known for their hyperbole so it's fair to imagine that the UCI ruling was as harmful as it stated. But you can’t keep a good engineer down, with Swiss Side’s response swift. Meet the Hadron Ultimate 650.
