Slower than you
Join Date: Nov 2004
Location: SF, CA
Bikes: IRO Mark V & Don Walker Custom
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Eww, biopace, I know Sheldon likes 'em but I'd still be scared to run a biopace ring.
As for your question, you could spend a bit extra and get an IRO crankset. They're very nice, and go for about $80 which isn't bad for a brand new crankset. Although, they only come with a 46T chainring. BCD refers to the spacing between the holes on the chainring, Bolt Circle Diameter.