SHIMANO Dura Ace CN-7901 Chain

I'm buying my 2nd one of these for use with a Dura-Ace 7800 group. Got about 3,000 miles out of the first one. Lots of debate on whether this chain works with the 7800 group and I've had no issues. I have a Dura-Ace 7800 rear derailleur, FC7800 crankset and have used both the Ultregra 6800 and Dura-Ace 7800 cassettes. I also use the KMC Missing Link master link to connect the chain with no issues. This is a directional chain that will chatter if you install it the wrong way. Works as expected when installed correctly.One thing I did learn is to not soak this chain in any kind of solvent or degreaser. I left mine in a bucket of degreaser over night and it completely destroyed the shiny finish. I was left with a black chain that still worked okay. Shimano tells you this in the directions but of course I didn't pay any attention to those! I only using soap and hot water now.

I have a Felt F75X, and was not overly impressed with the bike or the drivetrain. It had a full Shimano 105 setup with the exception of an FSA chain and crankset. I tried every type of lubricant, and had the LBS readjust derailleurs several times, but I could never get the crisp shifts that I was looking for.I only had 500 miles on the original chain, but started getting a link that was consistently binding. I was going to spend some money on my bike as it is my primary commuter, and contemplated upgrading the entire drivetrain, but started with the chain. The difference was amazing. I replaced the chain myself, and dialed in the derailleurs and have not missed a shift yet. Crisp, fast, confident shifts.One aspect of the reviews here and at other sites that was a bit confusing was trying to decipher compatibility with my 105 components. I would suggest Googling Shimano Drivetrain Compatability Chart. You will get a PDF that spells out pretty clearly what can be used with the various Shimano components.

Forget the Di2 designation in the description, as there is no chain specific to the Di2 models. This will fit all 10 speed Shimano drive trains, cable or electronic. I did not connect the chain with the Shimano pin, as I keep having issues with them on the 10 speed chains. I bought the KMC 10 speed quick link which makes it easy to take the chain off for maintenance and replacement. I wish Shimano would jump on board and just include this with all new chains. These chains are directional, so make sure you orient it correctly or you will get poor shifting and extra noise.

Similar to one of the other reviewers, I installed this on my road bike with the new Shimano 105 (5700) group. Wow, is all I can say! Shifts are light and very precise, and it runs very quiet. I was previously using my standard KMCx10 chain, and this Dura-Ace chain made a big difference. I've owned other road bikes with Sram Rival and Ultegra, and this setup is the smoothest I've ever felt. I even had a previous carbon bike with the Ultegra group and the older DuraAce 7800 chain, but it was not as smooth.What ever they did to improve it, it works!

I got what I paid for I suppose.I have had greater success having a chain last longer before chain stretch with Ultegra and 105 chains.I'm currently in the process of testing a KMC X10SL.So far it shifts smoother even 500+ miles in. And is lighter. No stretch whatsoever yet.

I previously had a Shimano Ultegra chain (model 6600 I believe) that was shown to be worn between 0.75-1% which is within range for normal replacement. I opted to spend the extra money for the Dura-Ace due to both weight reductions and claimed shifting improvements.While I did not measure the weight (and this is very small compared to the mass of my aging waist line) I could tell an immediate difference in the ease of shifting and the overall quietness of the drive train.It was well worth the $50.

The chain is easy to install, you just have to make sure that you orient it according to the instruction sheet. I was worried that something was going to go wrong when I went to break off the chain connection pin, but the pin snapped off perfectly flush with the outer edge of the chain. The chain works great.

Found out that after riding 5000 miles that I should have replaced the chain every 2000 miles or so. Didn't want to ruin my sprockets, so I got one and it works just like the old one, flawless. I used a Park Tool CT-3 with no problems. Go to YouTube and you can see videos on chain replacement. A little expensive, but you want the best, don't you?

Don't know where the retailer found it after all these years, but this is a genuine Shimano Dura-Ace 7901 10 speed chain - definite improvement in shifting speed and one of the lightest chains you can get. Glad to have got another one.

Just what you would expect for a Shimano Dura-Ace.

評価としては、まったく不満はないです10年ロード乗りをしていますが、チェーン切れは一度も無し他社を使用したことがないので分からないのですが

前世代のコンポなので10sデュラのチェーンはとても助かります。やはり、デフォルトのルブは高粘度なので脱脂してから使った方が良いですね。

ｚｎめっき品が廃番になるので、予備用に購入できとりあえず安心