Well I bought it about a year ago and my bike was pretty noisy for a while. I ride about 70% mountain trails and 30% hardtop, which is pretty aggressive for an old bastard. I've driven about 1000 miles since I bought the chain, but it's been noisy for quite some time. Finally measured the stretch today and there was about full link stretch at 25 links compared to the other chain, so the replacement point was long gone (my bad one). Switched to the previous not so stretched chain and the transmission is much quieter. Some websites say the chain should last over 750 miles and needs to be replaced at about 0.75% elongation. Mine stretched about 5 times more - about 4% or more. So I will choose a higher quality chain in the next round. Hope it lasts longer. It's ok for the price and as long as you don't push it too much it's ok.
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