Need some advice, dura ace 7700.

[TimS]

I put a picture up the other day, they wont let me do it again. I found a new derailler, but now am interested in replacing the 2 rings that the chain goes on. What am I looking for? Do I need to count the teeth and ask for that specifically? What series will work with Dura Ace 7700? Thanks! Tim

[oldpotatoe]

I put a picture up the other day, they wont let me do it again. I found a new derailler, but now am interested in replacing the 2 rings that the chain goes on. What am I looking for? Do I need to count the teeth and ask for that specifically? What series will work with Dura Ace 7700? Thanks! Tim

BCD, bolt chainring diameter, is 130mm. The outer/big ring needs to have shifting 'aids', pins and ramps. It probably is 53teeth. The inner/small ring is a simplier and is probably 39t. Many manufacturers for compatible chainrings for your crankset. Go to a decent bike shop and ask, it's what they do.