I've got a DA 7402 crankset but the large chainring (52t) is getting pretty warn and I'm thinking of replacing it. Finding the matching 7402 ring is going to be tough but I've been finding some DA and Ultegra rings from the 7700 series. Would the 7700 series, which is 9 speed btw, work with my 7402 drive train which is 8 speed (I have DA 8 speed derailleurs, cassette, shifters, etc). They are both have a 130 bcd and look very similar. Are the 7700 rings narrower because they are made for 9 speed? Will this cause any chain/chainring noise or extra wear?

Thanks!


PS: The ring set up I have now is 39-52. Would running 39-53 be a big deal?