Shimano, road ? You get a 130 BCD single speed chainring , and if you still have a square taper crank ..

you pick a BB Axle length to get you the chainline you want.. shorter if the chainring is on the outside,
longer, if on the inside

As a double crank, chainline center, is between the 2 rings ..

I have a single ring on the inside + a disc chainguard , on the outside.. (IGH in back wheel for me)









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