X12

My wife has a Santa Cruze Tallboy, and it was time for a new chain. I've had super good luck with the 12 speed road chain for my Campy-equipped bike, so when it was time for a new chain for the tall boy, it was going to be a KMC. (I bought a few missing links as well. Very helpful for chain maintenance.)

It's early on the KMC for the mountain bike, but if it works like my road chain, we'll be good to go. On the stand, shifting is good, chain is quiet, and it rides the sprockets really well. We'll see how things go, but I am optimistic.

I have over 1,000 miles so far on this chain and it's been great so far. Looks amazing. My only complaint is that the weight spec is WAY off from what is advertised. The website claims 234g but I weighed mine at 271g straight out the box. That was a bummer, hope they can fix that claim, and even better if a SL version gets released.

KMC continues to put out amazing chains for a great price point. I run 12 speed Campy, Shimano, and SRAM and wanted a chain that could go on any of them. Campy chains are too expensive and SRAM chains are trash at best, so KMC fits the bill for all of them. They run quiet and crisp on all the gruppos I run.

I bought the silver X12 with the hope that it would be smoother and last longer than the Shimano XT chains I have been using. The first ride with the X12 confirmed that this is a chain that is smoother and shifts better than the chains I have used. I only have 48 miles on the X12, but so far, the chain has lived up to my expectations. My Niner Jet 9 shifts better than it ever has. I expect that the longevity will also outperform my previous chains.

Great and an excellent chain. Made shifting much better and I got the chain matching the bar tape and direct mount hanger.