4 April 2021

BCD full form

 What is the full form of BCD?

Answer:

  • Bolt Circle Diameter

What does BCD mean?


The diameter of the circle that passes through the middle of all of your chainring's bolts is known as BCD. This dimension is generally measured in millimetres on bicycle chainrings. When choosing a new chainring for your bike, knowing the BCD of your crankset is important.

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