kjodell

I've got a 9-speed Daytona 53-39 crankset with badly worn big and small rings. Can't find the exact parts; are there replacement rings (e.g., Centaur) that will fit?

fietsbob

Daytona model name was dropped, may have been conflicts with lawyers
for NASCAR
and that Florida City race track they have there.

Campag uses a 135mm bolt circle, there are after market chainrings made to fit on those cranks,

made in that bolt circle you can get Campag spare chainrings from a different road group, still in 135
( on some the catch pin is in a different place, if the crank has a hidden 5th bolt behind the crankarm).

or get some from a different brand, TA makes replacement chainrings for other peoples crank arms ..

they are equally top tier , Ergal alloy.

kh777

One idea if you want to be cost effective: It's usually more expensive to get new replacement chainrings - on ebay you can easily find new alloy campagnolo cranks from a few years ago, for cheap (cheap is relative, depending on the model of course). Get a complete campy crankset (double, non compact) with the chainrings you want and part it out. There are different grades of campy chainrings so you can take your pick depending on how much you want to spend... if you don't mind stamped chainrings you can get Veloce (or some years of Centaur). The nicer finished chainrings can also be found, they switched chainrings on the centaur around 2007 or 08.

I have a Daytona 10 crank on one of my bikes. It's the same spider as the Veloce and Centaur (non-UltraTorque). The BCD is 135mm as fietsbob said.