Shimano GRX Fc-Rx820-2 12v crankset
The SHIMANO FC-RX820-2 offers a perfect balance of lightness and efficiency optimised for mixed terrain riding and racing. The double chainring meets the segmented needs of Gravel, offering closer and more progressive ratios necessary to maintain position in the group.
Features
- More progressive ratios for cadence control on mixed terrain
- Gravel-optimised gear ratios ensure smoothness on uneven surfaces
- Wider range of ratios
- The 17D range covers a wide range of conditions of use
- Combined toothing: 48-31D
- Real weight: 720 g
Technologies
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 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 & rotating performance in a lightweight and beautiful crankset design. High Precision Sealing Moreover, Hollowtech II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.