What is the measure of BCD

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asked Jul 18, 2021 28.8k views

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Pengun · Answer 1 · 2021-07-25T02:04:54+0000

Answer:

Bolt Circle Diameter (BCD) is the diameter of the circle that goes through the center of all of the bolts on your chainring. On bicycle chainrings this dimension is usually measured in millimeters. ... On a chainring with 4 bolts the BCD is the distance between two bolts across from each other.

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What is the measure of BCD

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