Thread: Stronglight chainrings multiple bcd?
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Old 02-07-26 | 10:43 AM
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JohnDThompson
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Originally Posted by smontanaro
Consider this 86BCD Stronglight chainring.

I know the extra pair of holes aren't quite ready to accept chainring bolts, but are they at correct distances to be adapted for use with larger BCDs? If so, what might those two other BCDs be?
I just checked my chainrings. The middle set of holes does correspond with the 122mm BCD used by Stronglight 93 and 104 cranks (but you'd want to counterbore them for the chainring bolts. The outer set of holes does not correspond with either 130mm or 144mm BCDs. I do not have a 135mm BCD ring to compare. It does correspond with the Stronglight chain guard.
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