Priekinis žvaigždžių blokas Shimano TIAGRA FC-4700 175MM 2x10-speed

Shimano Tiagra FC-4700 2-piece crankset with integrated axle for 2x10-speed drivetrain. Modern and aerodynamic capless crank arm design with glossy grey anodized surface coating. Optimal balance between stiffness and lightweight. Optimum power transfer motivates riders to pedal further and faster.Reinforced 4-arm constructionBCD (Bolt Circle Diameter): 110 mmGear combination (OPTIONAL): 50-34T OR 52-36TCrank arm length: 175 mmMaterial: aluminum, anodized and fibreglass-reinforced plasticCompatible with HollowTech II bottom bracketBottom bracket is not included (sold separately)Compatible with 10-speed chainsChainline: 43.5 mmQ-Factor: 150 mmWeight: ~ 910 gHyperGlide – specially positioned shift ramps and tooth profiles for improve chain control during shifting. Fast and responsive indexed shifting is the result.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 which will maximize a rider’s power transfer. The rigidity of the crankset ensures pedaling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. 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 a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.