The Cook Bros. "E" series cranks are more traditional in their styling. They are machined from 7075-T6 billet aluminum. Unlike the other Cooks arm sets these have a rectangular cross section, not round, and the E cranks use a replaceable, user installed spider. At the pedal spindle, the arm is 27.83mm, it reduces above the pedal to 18.5mm. On the left arm, at the B/B spindle area widens to 37.5mm. The arms are 14.14mm thick at the pedal spindle and thicken to 26.4mm at the B/B spindle. The right arm has five round posts protruding from the back of the arm. These five posts are drilled and tapped for the inner fixing bolts to anchor in. The spider with the outer fixing bolt pattern drilled into it also slides over these five posts. Custom aluminum spacers used with the inner fixing bolts tighten down over the machined plate aluminum spider. The right arm has four stubby extensions that the posts are fastened to. The extensions lie perfectly over the spider.
Color-B-BK-GY-L-S $ Price in Catalog 94mm BCD replacement spider Color-B-BK-GY-L-S $ Price in Catalog 110mm BCD replacement spider Color-B-BK-GY-L-S $ Price in Catalog 130mm BCD replacement spider Color-B-BK-GY-L-S $ Price in Catalog
