Shimano GRX FC-RX820 2 x 12-Speed Crankset Size:172.5mm 48-31T progressive and modular braking

progressive and modular braking

Power upgradeable

long-lasting application of power to the drivetrain

wide nosed

These pads reach maximum potential with some heat buildup from cornering and descending

Shimano GRX FC-RX820 2 x 12-Speed Crankset Size:172.5mm 48-31T progressive and modular brakingThe 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. FeaturesGravel optimized 48 31t gear combination ratios preserve riding rhythm on rough surfaces The 17t range covers an array of riding conditions Smaller gear steps for cadence control on