Partington Wheelset R-Series for SRAM.
Utilizing proprietary technologies and construction, Partington wheels are now the lightest and stiffest clincher wheelset in the world. The MKII is the result of two years of focused and intense development, combining the latest in carbon materials design and manufacture to achieve a wheel that is the lightest in its class today. The new MKII R-series is the ultimate performance road wheel for training and competition. With the highest lateral stiffness (~55/mm) in its class, the MKII delivers exceptional ride comfort and responsiveness for the discerning rider.