FC-RX820 12-Speed Double Chainset

Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world
The GRX series offers premium performance at an incredible value, with thoughtful ergonomic designs and gravel-centric gearing for all manners of unpaved adventures.

Optimal gearing for spirited group rides and aggressive racing

The SHIMANO FC-RX820-2 balances weight savings and optimal efficiency for mixed-terrain riding and racing. Double chainring gearing caters to the segmented demands of gravel cycling, maintaining the tighter gear steps needed to maintain your position in the bunch. The 2x12-speed crank utilizes a 48-31T chainring and comes in 170, 172.5, and 175 mm crank arm lengths.

Features:

- Smaller gear steps for cadence control on mixed-terrain riding
- Gravel-optimized gear ratios preserve riding rhythm on rough surfaces
Wider gear range
- 17T range covers array of riding conditions
- Gear combination: 48-31T

Product specification:
- MODEL NO: FC-RX820-2
- SERIES: GRX 12-speed
- Color: Series color
- Average weight: 710
- Rear speeds: 12
- Compatible chain: HG 12-speed
- Chain line (mm): 47
- P.C.D. (mm): 110/80
- Spider/gear arms: 4
- Chainring combination: 48-31T
- Q-factor (mm): 151
- Crank arm length (mm): 170, 172.5, 175
- Optional chain guard: Without chain/bash guard
- HOLLOWTECH II
- HOLLOWTECH crank arm
- Compatible bottom bracket type: Outboard
- Recommended bottom bracket: Threaded (normal) - SM-BBR60, Press-Fit - SM-BB72
- Threaded bottom bracket shell width (mm): 68, 70
- Crank fixing screw included

Does not include a bottom bracket