Shimano GRX FC-RX820 2x12 Speed Crankset - 68-70mm Shell - 24mm - Four Bolt - 110-80 BCD Asymmetric Shimano - 175mm - Black - 48-31T - 47mm Chainline Replace Images 5 185x50(TR) 210x50

5 185x50(TR) 210x50

one 100 Lumen warm used for flood beam and one 100 Lumen red

but with even more grip

Crankbrothers analysed the outsole profiles from a number of top mountain bike shoe brands and discovered two distinct surface areas to optimise the shoe/pedal interface for the entire range of shoe sizes

Shimano GRX FC-RX820 2x12 Speed Crankset - 68-70mm Shell - 24mm - Four Bolt - 110-80 BCD Asymmetric Shimano - 175mm - Black - 48-31T - 47mm Chainline Replace Images 5 185x50(TR) 210x50The 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.