The Shimano GRX RX600 11-speed Cyclocross & Gravel Crank is designed to discover new roads. That is why you shift quickly and smoothly on this robust crank and the crank ratio is also adapted for the rough work. Crank ratio and smooth shifting This crank has a gear ratio of 46/30. Thanks to this ratio you get up the steepest off-road climbs more easily, but you also have enough gears for on the flat. The gears of this crank are specially designed to let you shift quickly and smoothly even in bad and muddy conditions. You can see this on the shift lines of the chainring. This makes this crankset very suitable for both cyclocross and gravel riding. Single and Double This crank is available in a Single and a Double version. This gives you the option to customise your crank to your liking! Pay attention! Only works with GRX Voorderailleurs You will only shift quickly and smoothly on this crank if you use one of the GRX front derailleurs. These are specially designed to bridge the big difference between inner and outer chainring. These front derailleurs are the Shimano RX810 and RX815 Di2 front derailleurs.