SHIMANO GRX FC-RX820 crankset

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-speed - Rear Speeds: 12 - Crank arm length(mm): 172.5 - Chain Gurd: Without CG - Gear Combination: 48-31T - Recommended bottom bracket|Press-Fit: SM-BB72 - Recommended bottom bracket|Threaded (normal): SM-BBR60 - Compatible bottom bracket type|Outboard: X