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I am thinking of replacing my 53/39 with an 50/34 compact crank set. Is there any other chain rings that will work for the inner ring like a 30 or 28 tooth ring?. Would want it just to do hill climb races.
 

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Cranky Old Bastard
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I am thinking of replacing my 53/39 with an 50/34 compact crank set. Is there any other chain rings that will work for the inner ring like a 30 or 28 tooth ring?. Would want it just to do hill climb races.
Sorry, no. They can't make a ring that is smaller than the bolt circle.

Triple crankset has smaller rings.
 
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