ROSE Bikes GRX FC-RX820-2 Hollowtech II Crankset Double x 12-Speed, 31-48 Teeth| Road And Cross

United in Gravel!
With a clear focus on the heart and soul of gravel biking, SHIMANO’s mechanical GRX series now gets a 12-speed update to deliver top performance!
Simplicity and reliability build the basis for the new 12-speed GRX line-up and allow you to enjoy off-road adventures of a special kind!

While developing the GRX FC-RX820 double crankset, SHIMANO’s developers have paid particular attention to the needs of modern cross, gravel and commuter bikes.
For those who appreciate versatility and flexibility, the double x 12-speed version of the RX820 is an excellent choice. A gear ratio of 48/31 tooth chainrings, which is optimised for gravel use, is used in combination with 11-34 or 11-36 tooth cassettes. This configuration provides an enormous gear range, which at the same time guarantees a comfortable cadence – when cruising on the flat, on long gravel roads or in the mountains.

Details:
Crankset for SHIMANO 12-speed gravel/cross bike drivetrains
Two-piece Hollowtech II design with integrated axle
Hollow forged aluminium crank arms
4-arm construction for efficient power transmission

Technical details:
Intended use: Gravel, Road, Cyclocross
Series: GRX
Model: FC-RX820-2
Material crank arms: aluminium (hollow)
Material chainring: aluminium/composite (large), aluminium (small)
Gears: double x 12-speed
Axle: integrated (Hollowtech II)
For a shell width of: 68 / 70 mm (for threaded bottom brackets)
Bolt circle: 110 mm/ 80 mm (asymmetric)
Chainline: 47 mm
Q factor: 151 mm
Weight: approx. 710 g

Available gear ratios:
31 – 48 teeth

Available with crank arm length:
172.5 mm
175 mm
Please indicate your choice.

Recommended bottom bracket:
BSA/Italian: SM-BBR60 (prod. code: 1955804)
PressFit: SM-BB72-41B (prod. code: 1955813)

Recommended chain:
SHIMANO 12-speed HG+ (e.g. CN-M8100, prod. code: 2286358)

In the box:
1 SHIMANO GRX FC-RX820 crankset double x 12-speed (WITHOUT bottom bracket cups)