Hope Evo Fat Bike Crankset - 170mm Direct Mount 30mm Spindle For 190/197mm Rear Spacing BLKHope Evo Fat Bike Crankset 170mm Direct Mount 30mm Spindle For 190 197mm Rear Spacing Black. The Hope EVO Crankset is a new benchmark for aluminum MTB cranks. The latest FEA analysis tools rigorous lab testing and extensive field testing mean the EVO crankset is both lighter and stiffer than pervious models. This crankset features a self extracting axle arm interface simplifying fitting and removal. Self extracting axle arm interface for ease of