GRX 2x12 gravel crankset
Shimano GRX FC-RX820-2 Crankset
The top-tier GRX double crankset, with a 48-31T pairing that gives close steps for fast gravel and enough low-end for steep, loose climbs. Wider chainline gives extra tyre clearance on gravel frames.
Highlights
Why we rate it
Gravel-specific ratio
48-31T sits between road and MTB gearing, keeping cadence steady on rolling gravel without running out of climbing gears.
Wider chainline
A 47mm chainline moves the rings outboard to free up room for wide tyres on modern gravel frames.
Hollowtech II arms
Light, stiff hollow arms on a 24mm axle carry over the proven construction of Shimano's road cranks.
Di2 and mechanical
Works with both GRX RX825 Di2 and RX820 mechanical 2x12 front derailleurs.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Model code
- FC-RX820-2
- Series
- GRX RX820 12-speed
- Speeds
- 2x12
- Chainrings
- 48-31T
- Crank lengths
- 170, 172.5, 175mm
- BCD
- 110/80mm asymmetric 4-arm
- Q-factor
- 151mm
- Chainline
- 47mm
- Axle
- 24mm Hollowtech II
- Weight
- Approx. 710g (172.5mm)
- Bottom bracket
- Hollowtech II threaded or press-fit (sold separately)
Ordering
Available from The Cycle Collective
Available to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.