GRX 1x12 gravel crankset
Shimano GRX FC-RX820-1 1x Crankset
A single-ring GRX crankset for simple, quiet 1x gravel builds, designed to pair with Shimano's 10-45T and 10-51T 12-speed cassettes. Tooth profiles help hold the chain on rough descents.
Highlights
Why we rate it
Built for 1x
Narrow-wide style tooth profiles help keep the chain on the ring over washboard and rocky descents without a front derailleur.
Pairs with wide cassettes
Designed around Shimano's 12-speed 10-45T and 10-51T cassettes for a big spread of gears.
Light and stiff
Hollowtech II arms keep the crank light while remaining stiff enough for hard efforts out of the saddle.
Tyre clearance
The outboard chainline suits wide gravel tyres and modern frame designs.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Model code
- FC-RX820-1
- Series
- GRX RX820 12-speed
- Speeds
- 1x12
- Chainrings
- 40T, 42T (44T and 46T rings also made)
- Crank lengths
- 160 to 175mm (varies by ring)
- Mount
- 110mm 4-arm
- Q-factor
- 151mm
- Chainline
- 49.7mm
- Axle
- 24mm Hollowtech II
- Weight
- Approx. 644g (40T)
- Recommended cassettes
- CS-M8100 10-45T or 10-51T (12-speed)
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.