I don’t remember the brand. It was the OEM as far as I know. I purchased the bike with 3500 miles and converted it into a track bike. It had around 8500 miles when the chain went. I knew it was getting to be time but it seemed fine by regular measures. I was doing that “one last track weekend” before changing it out... some vendor had a chain at the track and I went to a local store to get JB Weld for the case. I think I only missed 2 session for the weekend at most.