Shimano GRX FC-RX820 Hollowtech II 12-Speed Double Chainset

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Brand	Shimano
Colour	Grey

Shimano is a Japanese multinational corporation synonymous with cycling. Constituting 50% of sales in the global cycling market, and with their parts spanning across all types of bicycle, it is a highly reputable business that is constantly developing and innovating its assets.

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Shimano GRX FC-RX820 Hollowtech II 12-Speed Double Chainset

The Shimano FC-RX820-2 balances weight savings and optimal efficiency for mixed-terrain riding and racing. Double chainring gearing caters to the segmented demands of gravel cycling, maintaining the tighter gear steps needed to maintain your position in the bunch. The 2x12-speed crank utilizes a 48-31T chainring and comes in 170, 172.5, and 175 mm crank arm lengths./p>

Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world.

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 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. Moreover, HollowTech II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.

Features

The HollowTech II 12-speed chainset offers optimum gearing for mixed terrains and riding styles
Designed to work with HollowTech II type bottom bracket cups
Compatible with 12-speed Hyperglide+ chains
Anodized aluminium crank arms
Lightweight aluminium chainring
4 arm, 110mm bolt circle diameter