Ksyrium Pro UST / wheelset

The Mavic Ksyrium Pro UST is a landmark release that champions the "Road UST" standard, aiming to make tubeless setup as painless as possible by designing the rim and tire to work in perfect harmony. Its defining technical feature is the use of Zicral spokes—thick, bladed aluminium spokes that are significantly stiffer than traditional steel, giving the wheel an incredibly punchy, responsive feel under acceleration. The rims utilize ISM 4D machining, which carves away every unnecessary gram of aluminium between the spoke beds to create a distinctively "wavy" profile that reduces weight without sacrificing strength. With a 17mm internal rim width and Mavic’s Fore drilling technology—which keeps the upper rim bridge intact so no rim tape is required—this wheelset became a favourite for climbers and high-mileage riders who valued a stiff, lightweight (approx. 1650g) platform with a reliable ID360 quick-engagement freewheel.