Central movement shimano bb-mt501 bsa

Hollowtech II

A perfect balance between rigidity, robustness, weight and efficiency. Hollowtech II technology is aimed at the production of a higher cracking, capable of maximizing the transfer of power. The rigidity of the crankset guarantees L'Efficiency in the pedaling, while lightness, a key element of the crankset, facilitates the cyclist on long distances, where it is necessary to pedal more. Of course, Shimano has committed himself to the maximum to ensure superleggerara and extremely rigid cracking, two objectives in conflict with each other. The Hollowtech technology, which consists of an ultralight quarry pipper that keeps stiffness unchanged, was developed by Shimano with L'Use of its exclusive forging technologies. L’Addition of the Hollowtech II technology Integrate L'Central movement axis with the right handle, ensuring greater rigidity, a reduction in weight and high dimensional stability. The axial bearings system of the central movement guarantees a better weight distribution, which translates into a more efficient transfer of power. The Hollowtech II crankset was developed pursuing an optimal balance between stiffness and rolling performance, and so an ultralight and very elegant design was obtained.