Swiss Side has rolled out its latest HADRON³ Ultimate 650 wheelset, which adheres to the Union Cycliste Internationale’s new equipment rule, which limits rim height in road racing to 65mm starting January 1, 2026.
Performance Under Pressure
The controversial and unexpected ruling by the UCI effectively outlawed the 68mm HADRON³ Ultimate 680, ushering in the need for the HADRON³ Ultimate 650 as an immediate solution to the problem.
“The new model builds on the 3rd generation HADRON³ wheel designs launched in June of this year, featuring the same 22mm inner rim width and optimised V-shape profile for minimum aero drag with unmatched crosswind predictability,” says Swiss Side.
The launch follows Swiss Side’s widely published Open Letter to the UCI, which scientifically challenged the 65mm depth cap as an arbitrary measure, demonstrating that when compared to competitor wheels, rim shape, not just depth, dictate stability and safety.
Comparing to the performance of the 680, the new HADRON³ Ultimate 650 was developed to further enhance riding stability. The result, is a 12% reduction in steering moment (cross-wind sensitivity), plus a 0.5W aerodynamic drag increase at 45km/h, as well as a 33g weight savings.
“Despite the undue challenges brought by the impact of the UCI rim depth limitation on our brand, business, and supply chain, thanks to our sensational team and partners, we have been swift to react under pressure. The HADRON³ Ultimate 650 is our definitive answer: the fastest and fully UCI-compliant wheel available, delivering ultimate performance and safety, at the absolute limit of the rulebook,” says Jean-Paul Ballard, CEO and Co-Founder of Swiss Side.
Where to Buy
The HADRON³ Ultimate 650 wheelset continues with the same DT Swiss 180 Aero hubs and Aerolite II spokes for €2,699. However, Swiss Side is currently offering a special online price of €2,159, as well as through its retail partners.
Meanwhile, the HADRON³ Ultimate 680 remains available for triathlon, non-UCI events and enthusiasts who are looking for maximum aerodynamic gains.
Swiss Side
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