Cook Bros Racing Chromo "Dogbone" Crankset

100% heat-treated tubular Chromoly, ensuring strength and durability. Design: Dual pinch bolts for added security, with wrapping and welding at the pedal bosses for reinforcement. The set includes a 19mm x 6-tooth heat-treated Chromoly spindle, spindle bolts, sprocket bolt, and BB sets. Designed for American bottom brackets, suitable for 3-piece crank setups. Constructed from a combination of steel and aluminum 6061-T6, balancing strength and weight. Equipped with Cook Brothers sealed bearings for smooth operation and longevity. Specifically designed for use with a 19mm spindle. Available in three arm length options, 170, 175 or 180mm.