Thread: NBD and the Unknown Road Bike
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Old 07-22-25 | 08:02 AM
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pastorbobnlnh
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Originally Posted by Trakhak
"No Biopace 110x34s, though, the smallest is a 36."

I believe the smallest Biopace ring that will fit a 110-mm bolt circle is a 42.
I think you meant a 130BCD. I'm pretty certain there's a smaller than 42T for the 110BCD, but I could be mistaken.
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