Campagnolo has come up with another new chainring bolt pattern (why?) and we have added it to our coverage. It’s the most complete you’ll find anywhere. Print out the template that corresponds to the kind of bolt pattern of your chainring, lay the chainring down on it and you get an instant readout of the bolt-circle diameter, brand and model of the original manufacturer’s version of this chainring. We cover classic brands as well as the newest and most confusing models with irregular bolt-circle patterns. Our coal here as with all of our cribsheets is to help you match parts, and to show cross-brand compatibility when it is not obvious and not promoted by the manufacturers. Thanks to Jacob Allen for the drawings in AutoCad!
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