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.
- 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
- Rear speeds: 12
- Compatible chain: HG 12-speed
- Chain line: 47 mm
- P.C.D.: 110/80 mm
- Spider/gear arms: 4
- Chainring combination: 48-31T
- Q-factor: 151 mm
- Crank arm length: 170 mm
- HOLLOWTECH II
- HOLLOWTECH crank arm
- Recommended bottom bracket: Threaded (normal): SM-BBR60. Press-Fit: SM-BB72
- Threaded bottom bracket shell width: 68 mm, 70 mm
- Average weight: 710
