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The R-Hawk checks all the standard boxes for an all-mountain/enduro crank. Like Rotor's REX cranks, the R-Hawk is a work of engineering built on the principles of lightweight and rigid, but R-Hawk's modular concept offers compatibility that meets – and even exceeds – current trends in mountain bike technology. Crank arms will be available independent of an axle and chainrings; there's no longer a factory-assembled arm+axle, both crank arms can be removed from the axle. This way the R-Hawk can be mounted to standard, boost, and downhill axles. Rubber bumpers protect crank arms against wear, and can be customized with a choice of seven colors. Direct Mount chainrings for the R-Hawk feature Rotor's patented Optimum Chainring Position (OCP) system to optimize your pedal stroke. Swapping out chainrings on the fly becomes incredibly easy with just an 8 mm allen key.