My LBS put on a new chain on my bike. He said the chain was at 0.75 so a new cassette wasn’t needed. I drove 3.000 km with my new bike before the chain was replaced. All my components are Shimano 12s, but the LBS put a Sunrace(?) chain on it. The shifting is smooth but with my bike is a lot louder than with my previous chain that made barely any noise. The noise seems to be coming from the rear jockey wheel.
Is this normal noise from my rear jockeywheel?
byu/Nonnaclara inbikewrench
by Nonnaclara