The Dura-Ace 7410, is the successor to the DA 7402 crankset. The 7410 is Shimano’s top-of-the-line Road Racing crankset and is Shimano Total Integration (STI), HyperDrive and Dual SIS compatible for use with their narrow chain. These are cold forged arms, a process where the aluminum is first cut into the rough shape of the final piece and squeezed several times into it’s final shape, making a denser alloy arm that is less susceptible to stress fractures. The arm is then drilled, broached the B/B spindle, and tapped for the 9/16″ pedal spindle and the crank arm dust cap. After the front of each arm and the rear to the spider area has been given a fine polish, then clear (Silver) anodized, the front of each arm has the Dura-Ace logo silk screened in Black on it. (Previous versions had the logo engraved then painted Black, after anodizing). The right arm has the reverse side milled in the area of the spider leaving nice clean edges with no extra aluminum to increase weight. The arms have a flat surface so any bends are very noticeable, and in not painting the arms, it is easier to discover cracks and fractures from crashes. At the crank bolt, the arm is rounded reducing mass. The chainrings are precision cut and ground for an exact chain fit, then Silver (clear) anodized.
This set is in near mint condition with very low use.