Bike Talk
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What is BCD? BCD stands for Bolt Circle Diameter. It is the distance from side to side of a circle that goes directly through each bolt hole in a crankset. If you're looking at the hole in a crankset, imagine...
What is BCD? BCD stands for Bolt Circle Diameter. It is the distance from side to side of a circle that goes directly through each bolt hole in a crankset. If you're looking at the hole in a crankset, imagine...