Originally Posted by Hiro11

Last year, I bought two "Ultegra" chains from Amazon and BOTH snapped after only a few miles of riding. Both were purchased from what appears to be the actual Shimano store on Amazon, at least the listing links back to it. Both chains snapped nowhere near where I had cut them to length and nowhere near the quick link. This is obviously terrible from a safety perspective. I'm certain both chains were counterfeit, a risk I was not aware of at the time. This isn't hype, DO NOT BUY CHAINS FROM AMAZON. Actually, I've stopped buying anything bike-related from Amazon. I don't trust them.