The SHIMANO GRX 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.
BENEFIT
Smaller gear steps for cadence control on mixed-terrain riding
FEATURE
Gravel-optimized gear ratios preserve riding rhythm on rough surfaces
FEATURE
17T range covers array of riding conditions
BENEFIT
Gear combination: 48-31T
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Model No
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FC-RX820-2
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Series
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GRX
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Rear Speeds
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12
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Compatible Chain
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HG 12-speed
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Chain Line (mm)
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47
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P.C.D. (mm)
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110/80
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Spider/Gear Arms
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4
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Chainring Combination
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48-31T
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Q-Factor (mm)
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151
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Crank Arm Lengths (mm)
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170, 172.5, 175
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Optional Chain Guard
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Without chain/bash guard
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HOLLOWTECH II
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✔
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HOLLOWTECH Crank Arm
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✔
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Compatible Bottom Bracket Type
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Outboard
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Recommended Bottom Bracket
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Threaded (normal): SM-BBR60
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Press-Fit: SM-BB72
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Threaded Bottom Bracket Shell Width (mm)
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68, 70
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Crank Fixing Screw Included
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✔
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Average Weight (g)
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710
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