Description
For your riding freedom: the Gravel GRX 1×12-speed FC-RX820-1 crankset 42 teeth from Shimano
The SHIMANO FC-RX820-1 crankset combines durability, low weight, protection against mud and numerous gear ratio options to meet the different riding requirements of mixed terrain. By combining a 10-45 or 10-51 cassette with 40-, 42-, 44- and 46-tooth chainrings, there is plenty of choice between narrower gear steps or an ultimate range. The FC-RX820-1 is available with crank arm lengths of 160, 165, 170, 172.5 and 175 mm, offering fit options for riders of all sizes.
Both 1×12 options use Micro Spline, Shimano’s lightweight aluminium freehub design that pairs seamlessly with a small 10-tooth sprocket and features smaller, more widely spaced teeth to reduce sprocket wear. The 1×12 gravel crankset is offered in three crank arm lengths, so you can choose the ideal Shimano GRX setup for your needs and riding style.
Features – Shimano GRX FC-RX820-1-12 | 1×12-speed crankset | 42
- Optimum gear ratio for different surfaces and different riding styles
- Gear ratio tailored to gravel helps to maintain the riding rhythm even on uneven terrain with wider tyres
- Option with 10-45 and 10-51 cassettes for a variety of riding styles
Product features
- Application: Gravel, Cyclocross
- Groupset: GRX
- Model: FC-RX820-1
- Gradation: 42 teeth
- Q-Factor: 151mm
- Housing width: 68 / 70mm
- Front gear steps: 1-speed
- Rear gear steps: 12-speed
- Mount: Hollowtech II
- Compatible chain: 12-speed HG
- 4-arm crank spider: Yes
- Bolt circle: 110mm
- Chainline: 49.7mm
- Recommended bottom bracket Pressfit: SM-BB72
- Recommended bottom bracket BSA: SM-BBR60
Crank arm length
- 170mm
Material
- Crank arms: Aluminium, anodised
- Crank axle: Steel, plated
- Chainring: anodised aluminium
Colour
- Series color
Weight
- approx. 657g/170mm (manufacturer’s specification)
