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Item # SHI0289

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Item # SHI0289


Get out and train with your new lightweight chain.

With older Dura-Ace chains, we thought that Shimano had reached the limit of refinement for the lowly bicycle chain. After all, what more is there to accomplish than to ensure that it shifts crisply and runs quietly? To our surprise, this Shimano Dura-Ace CN-7901 Chain is better. This improvement comes in a number of ways.

First of all, the 7901 Chain is over 11g lighter than its predecessor. This is thanks to perforated inner and outer plates. Both chains share the same hollow pins, and it uses the same tried-and-true connector pin that Shimano has relied on for so long.

The second improvement is a slight tweak to the shaping of the individual inner and outer plates. Shimano was the first company to build an asymmetrical chain. The point of it all was to decrease the workload to get the chain to climb to the next biggest cog in the back or bigger chainring in the front. Their efforts also produced a chain that does this faster. So lighter and faster shifting, with less potential for chainsuck -- we like that.

With the asymmetrical chain design, it is of utmost importance to install the chain as instructed. This way, the beveling and overall shape of each inner and outer link can perform as designed. These new plate shapes mesh together with the Dura-Ace chainrings and cassette with unprecedented precision -- reducing mechanical drag (which, behind aero drag, is the greatest enemy to your efficiency.) The net effect is smoother and quieter shifting, whether the shift is on a casual endurance ride in December, or in a 1200 watt herky-jerky maelstrom coming out of the final corner of a crit.

The Shimano Dura-Ace CN-7901 Chain is compatible with the Shimano Dura-Ace FC-7900 and FC-7950 cranksets and Shimano Dura-Ace FD-7900 front derailleur. According to Shimano it is not compatible with the Dura-Ace 7800 series crankset and front derailleur.

Tech Specs

Compatible Components:
industry standard 10-speed drives, Shimano
Actual Weight:
One Color, 10 Speed: 266g
Recommended Use:
road cycling

Reviews & Community

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Shimano Dura-Ace CN-7901 Chain

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Here's what others have to say...

Unanswered Question

I have 10 speed compact crank ultegra new cassette Cs-6700 11-23t
I bought wrong chain ultegra 11 speed oops
So asking
Better to stay ultegra 10 speed chain or go up to dura ace?
I have this one in now actually has lasted much longer by shore didn't rust got 2nd season out of it.
Any advice?
Love my chain need new wondering which is way to go!!

5 5

Worth every $

  • Familiarity: I've used it once or twice and have initial impressions

Good quality

Unanswered Question

Alright here goes another "will this work question":
I have an Ultegra 6600 Triple set up. Will this chain work? Or would you recommend something different?

5 5

One of the best

  • Familiarity: I've put it through the wringer

This is right up there with the new KMC high end chain (the black one), always have good life and great shifting. I use it with sram red/force and the shifting is always smoother when compared to a sram chain. I would get a quick link to make cleaning a bit easier but overall very good chain.

5 5

Must-have for Di2 configurations

  • Familiarity: I've put it through the wringer

This asymmetric chain is the best chain for Di2 bikes, and the best chain Shimano ever made. It is incredibly quick and sharp, with no drama. It's durable, much more durable than past Shimano chains. I have tried the Ultegra and Wipperman 10S1 chains on DA 7970 Di2 and Ultegra 6770 Di2, and this DA chain is noticably better than the others.

Do yourself a favor and buy a Connex quick link and use it with this chain so you can remove it for cleaning. (It will last a lot longer, and if you can run it through an ultrasonic parts washer you will be greatly rewarded.) Both the Connex link and the Shimano chain are directional, so pay attention when you are installing it. (Shimano name plates facing out on the chain. Point the longer, more elegant curve on the Connex link toward the gear teeth.)

5 5

Super Quiet, Smooth Shifting Chain

  • Familiarity: I've put it through the wringer

I run this chain on a SRAM group and find it is quieter and shifts better than SRAM's chains, probably due to the shape of the links. I used to avoid Dura-Ace chains thinking they were too expensive or didn't work as well with SRAM as SRAM chains but my LBS showed me otherwise.

5 5

Smooth Shifting

  • Familiarity: I've put it through the wringer

I tried a KMC chain with Dura-Ace 7900 groupset and had shifting issues. I went back to this chain and it has been perfect.

Unanswered Question

I have seen mixed info on whether this...

I have seen mixed info on whether this chain works with Shimano dura ace 7800 10sp crankset, derailleur. I need to replace my old 7800 12-25 cassette and dura ace chain and was going to purchase the 7901 chain and pair it with a 12-27 7900 casette. Would that work/be compatible?

5 5

Love these chains

What can I say, I use em, replace em, and then do it all over again.

5 5

Runs Great with SRAM Red

Prefer running this Dura Ace chain with my SRAM Red set up. No noise, shifts well, and does what it's supposed to do. No complaints here!

can i install a 7901 shimano chain and use...

can i install a 7901 shimano chain and use a master link or does it have to be pinned solid

Responded on

I have run SRAM master links with Shimano chains with no issues. I do not believe it is Shimano endorsed however.

Can dura ace 7901 chain work with FSA...

Can dura ace 7901 chain work with FSA 2-chainring? (the casette is dura ace 7900)

will this chain work a dura ace 5speed...

will this chain work a dura ace 5speed freewheel, stonglight double free wheel and shimano 600 arabeqsue front and rear derailleurs?

Responded on

Nope. The chain will be entirely too narrow for the cogs. Look at a Wipperman Intrax 708 or KMC Z-50 chain. They both work with a 5 speed freewheel.

Will this chain, the 7901, work on double...

Will this chain, the 7901, work on double Ultegra 6700 cranks and Ultegra 6700 short cage rear derailleurs?

Responded on

yes, it will work on all 10 speed drivetrains, just make sure you put in on the right way-it has asymmetric links so one specific side must face toward the frame.

What is the difference between the 7900,...

What is the difference between the 7900, and 7901?

Responded on

The 7900 came with a reusable link. That was discontinued and Shimano went back to the master pin design for the 7901.

5 5

Shimano Dura Ace CN-7901 10-Speed Chain

Awesome chain, lightweight, nice and durable. It is very compatible with all the Shimano 10-Speed range, and also SRAM too. When I used SRAM components in the past, I ran Dura-Ace or Ultegra drive train. Dura-Ace is slightly more expensive, but a bit lighter.
This is a great, strong chain, and you will never have to worry about snapping one of these in a sprint.

5 5

Great Smooth Chain

This chain is very smooth and clean feeling rinding it and shifting it. They also wear well so they don't feel bad after a lot of use.

The Dura-Ace CN-7901 box says that it is...

The Dura-Ace CN-7901 box says that it is to be used for a double chain ring only. I have a tripple> Why won't it work.

Best Answer Responded on

Technically it will work though for the best shifting performance Shimano recommends using the 7901 chain with double cranksets only and 10 speed cassettes. Ten speed chains are narrower than 9 speed but do work on those drivetrains. You run in to more problems using wider chains on 10 speed systems.

Just be sure to install the chain with logos facing out as it is directional.

How well do these Shimano asymetrical...

How well do these Shimano asymetrical chains work with SRAM chainrings? I'm sure Shimano recommends using them only with their own rings, but has anyone tried them on SRAM? I'm using Sram Rival components, but want to try Ultegra (6600) cassette. Thanks.

Responded on

Never mind. Went with older Shimano 7801 chain.

Responded on

Ultegra and Dura-Ace chains and cassettes work perfectly fine on SRAM Rival. In fact, some would argue that it will run even better.
I know you asked a while ago, but maybe now you are ready for a new chain and cassette! Happy riding mate!