I recently purchased this chain as a replacement for a KMC chain I had previously. My bike had a mix of Shimano 105, KMC, and FSA components, but I've made a couple upgrades to Ultegra as I wore parts out. I found this chain to be easy to install and it's running smoothly on my bike now. I've noticed that my efficiency has increased slightly since installation, which has translated to several unexpected PRs on Strava segments. I am very happy with the high standard Shimano has set with their components, and Ultegra is a great balance of performance and price.
A new chain can make your bike run like a deer. I love my Cannondale caad10 Ultegra, but even more when my favorite mechanic Todd puts on a new chain and tightens up the derailleur. Ride safe, but wear a bracelet with your medical contact.
Replaced my original chain after 3600 miles (still had life left) on trek road bike. The shimano is lighter and shifts smoother than the original even when new. I get good miles out of my chains as I clean them every 150-200 miles. I remove soak them in simple green, scrub with paint brush, rinse and blow dry with hair dryer, reinstall with master link then use Motorex road strong motor cycle lube. I know your thinking this guy is text book OCD my wife keeps telling me that, never the less my LBS tells me what ever I'm doing its working.
Okay the chain works great and is the high quality we expect and get from Shimano. My only caveat is that installation of this chain is not as easy or foolproof as with the SRAM or KMC products. I learned the hard way-the link pin must be inserted correctly or the chain can break. In my case the chain broke as I was climbing a hill, and locked up in the rear derailleur which then tore through the chainstay of my titanium Litespeed on its maiden voyage. A bitter pill for sure, for which I don't blame Shimano. I simply want to warn users of this system that installing this chain correctly is important. Since this disaster I have installed these without a problem and run them on more than one of my bikes, so all good now. But a tough way to learn I hope other buyers avoid.
I guess a chain could be awesome but not sure. Got this one to replace worn Dura Ace chain on rain bike.
New chain works great. And the price was extremely reasonable.
In fact I sold some Dura Ace 10 speed chains (new) on eBay, bought and extra one of these and had extra $$$ in my pocket afterward. That's a win-win!!!!