Shimano FC-RX820-2 Front Crankset GRX 48-31T 172.5mm 12-Speed

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 2×12-speed crank utilizes a 48-31T chainring and comes in various 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 SPECIFICATIONS

Model No: FC-RX820-2
Series: GRX 12-speed
Colour: Series colour
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)|172.5: Yes
Optional chain guard|Without chain/bash guard: Yes
HollowTech II: Yes
HollowTech crank arm: Yes
Compatible bottom bracket type|Outboard: Yes
Recommended bottom bracket|Threaded (normal): SM-BBR60
Recommended bottom bracket|Press-Fit: SM-BB72
Threaded bottom bracket shell width (mm)|68: Yes
Threaded bottom bracket shell width (mm)|70: Yes
Crank fixing screw included: Yes

ABOUT SHIMANO

In response to surging demand for global environmental preservation, bicycles now attract attention as the most eco-friendly means of transport. Shimano are dedicated to supply high-quality and high-performance components for different types of bicycles made in various countries and regions of the world, ranging from bicycles for the world’s top racers to daily users.

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