Profile No Boss CranksetNo Sprocket Boss version of Profiles race cranks for that cleaner look. for use with their Spline drive sprocket only. Profile have been the premiere brand for 3 peice cranks for the last 15 years or more. These cranks are made in the USA. The arms are made from 4130 chromoly and the spindle is a heat treated gun drilled hollow 4130, 48spine spindle. Still the best cranks around and they now come with the flush bolt upgrade and hollow spindle as
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