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Cranksets
Shimano GRX FC-RX820-2 Crankset
170 mm · 48-31T
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
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Evidence and freshness
Technical-source dates and retailer offer checks are separate. A retailer check does not validate compatibility.
Report a correction- Technical review
- Jul 28, 2026
- Compatibility review
- Reviewed Jul 28, 2026
Approved technical sources
- Shimano GRX crankset specificationManufacturerSource checked Jul 28, 2026Evidence reviewed Jul 28, 2026
- Shimano front drivetrain compatibility C-455ManufacturerSource checked Jul 28, 2026Evidence reviewed Jul 28, 2026
- Vehicle Cyc FC-RX820-2 exact Shimano package identityRetailerSource checked Jul 28, 2026Evidence reviewed Jul 28, 2026
Technical data
Specifications
- Supported speeds
- 12-speed
- Crank spindle
- 24mm
- Drivetrain family
- Shimano GRX 12-speed
- Compatible chain families
- Shimano HG 12-speed
- Front drivetrain groups
- Shimano C455 Grx 2x12
- Front chainrings
- 2x
- Chainring combination
- 48T, 31T
- Chainline
- 47 mm
- Crank arm length
- 170 mm