Priekšējie zobratu bloks Shimano ACERA FC-MT210-2 36-22T 175MM 2x9-speed

Product Technical Specification

TECHNOLOGY

HOLLOWTECH II - Providing the best balance of stiffness, strength, weight, and rotating performance. The concept of HOLLOWTECH II technology is focused on producing a superior crankset that will maximize a rider’s power transfer. The rigidity of the crankset ensures pedaling efficiency, while its lightweight aids in cycling longer distances. Naturally, SHIMANO strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. HOLLOWTECH technology is an ultra-lightweight hollow crankarm created by SHIMANO with the company’s own proprietary forging technology that also maintains rigidity. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket (sold separately) bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer. The HOLLOWTECH II crankset has been developed by pursuing the optimum balance of stiffness and rotating performance in a lightweight and beautiful crankset design. Moreover, HOLLOWTECH II crankset has high-precision sealing in the bearing area to increase durability, maintaining excellent rotating performance for long periods.