Quote:
Originally Posted by red-beard
You CAN replace the chain rings. But buying new crank arm/chainrings with a new bottom bracket would be quicker & easier.
He might want to invest in a whole new group set, say something like Shimano 105.
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It's cheaper to buy a new bike than to retrofit with a new groupo. And the new groups don't fit well to the old frames. Different chainlines, rear spacing, front derailleur braze ons, real cogset compatability, etc.