Power every pedal stroke with the Shimano GRX FC-RX820 42T 170mm 12spd Crankset. Built for efficient performance, the crankset delivers a lightweight feel without compromising stiffness or strength.Pairing smoothly with 10-45T or 10-51T cassettes, the 42T chainring supports both tighter gear steps and wider range options. High-precision seals in the bearing area protect the internal system, keeping performance consistent across long distances and rough conditions. The Shimano GRX FC-RX820 42T crankset supports smooth rotation, reliable durability, and confident riding on every outing.Features:- Lightweight HOLLOWTECH II crank arm boosts pedalling efficiency- 42T chainring pairs with 10-45T or 10-51T 12spd cassettes- Stiff construction supports consistent power transfer- Integrated bottom bracket axle increases stability- Precision-sealed bearings improve long-term durability

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