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

Specifications
Rear speeds 12
Compatible chain HG 12-speed
Chainring combination 48-31T
HOLLOWTECH II
HOLLOWTECH crank arm

Mfr Claimed Weight 
710g