Discover the Rotor R-Hawk Modular Crank Arms, engineered for demanding enduro and downhill riding. Crafted from lightweight, high-strength 6082 aluminum, these 175mm and 170mm crank arms deliver exceptional stiffness-to-weight ratio, ensuring maximum power transfer and durability on rugged trails. Featuring an innovative OCP direct mount (DM) interface, they allow riders to customize their chainring configuration for optimal performance and efficiency. Designed with versatility in mind, the R-Hawk crank arms are compatible with a range of components, including separate axle spindles, spacers, DM rings, and bottom brackets. The 30mm spindle interface provides a secure, rigid connection to your bikes bottom bracket. Built for serious cyclists, these modular cranksets are ideal for aggressive riding styles, ensuring reliable performance across challenging terrains. Please note, due to inset pedal bore locations, some flat pedals with large inboard bearings may not be compatible. Elevate your trail performance with Rotors innovative engineering and high-performance materials, delivering a top-tier cycling experience.