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Item # SHI0153
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Shimano Dura-Ace CN-7900 Chain $0.00
Good luck finding a finer chain.
A chain is a funny component: We judge them not on what they do do, but rather on what they don't do. If your shifting is crisp and you don't get chain suck and your drivetrain is quiet when you pedal -- how can you improve upon that? Shimano understands this, and with their Dura Ace CN-7900 chain their goal wasn't to re-invent the pro-quality bike chain. Rather, they've refined the refineable in order to ensure that you spend nearly no time thinking about your chain.
The Dura Ace CN-7900 is built with an asymmetric design -- meaning that the outer plate and inner plate shapes don't exactly mirror each other. The profile of the outer plates is designed to reduce the possibility of chain suck when you're shifting between chainrings. And the inner plates are shaped to interface with Dura Ace CS-7900 cassette cog teeth with an 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 1200W herky jerky maelstrom coming out of the final corner of a crit.
The perforated plates and hollow chain pins of the Dura Ace CN-7900 chain make it over an ounce lighter than the Dura Ace CN-7800 chain. After a brief stint with new master links, Shimano has gone back to the tried and true connector pin we know them for. These chains come with the updated connector pin, rather than the original master link which saw several problems.
The Shimano Dura Ace CN-7900 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.
Reviews & Community
Best all rounder
- Familiarity: I've put it through the wringer
Pick this chain up at Competitive on a deal - it's a great chain. Can get 3000-4000 miles out of this chain. It is asymmetrical, so install with the DuraAce logos/writing facing you.
i have a specialized tarmac triple and...
i have a specialized tarmac triple and ordered some of the cn 7901 chains but the box says it is not compatible with a triple. friends have said it will work fine but watch out for cross chaining. anybody had experience with this? thanx
The official answer is that Shimano recommends the 7801,6600, or 5600 chains with a triple. That said I haven't heard of any cases where this was an issue...
Write your question here.how can i find...
Write your question here.how can i find master link
Shimano suggests you use their Pin to assemble this chain if anything else is used you will void your warranty. Shimano originally released this chain with a Quick Link but had problems with it and pulled it, they will be rereleasing it soon.
what is the length and span length of the...
what is the length and span length of the 114 link chain?
57-inches ... bicycle chains are 1/2-inch pitch, so 2 links (1 inner, 1 outer) is 1-inch. 114 links is 57-inches.
Recommended with different master link
I installed this chain when I replaced some 7800 series parts (rear der., cassette). I kept my 7800 front derailleur and R700 compact crankset. Immediately upon pedaling with new setup I heard a repeating clunk in the area of the cassette. Mechanic inspected and found the master link was making the noise. Seemed not to go through rear derailleur sprockets cleanly. He replaced with Wipperman link and it is all fine. He later told me Shimano suspended the 7900 master link production. Check it out for yourselves.
Is the Shimano America Dura-Ace CN-7900...
Is the Shimano America Dura-Ace CN-7900 bike chain compatible with a 105 50/34 crank and 105 11-25 cassette or is this just for Ultegra?
If this is not compatible, can you suggest an upgrade from the CN-5600?
As long as your 105 components are 10 speed it will work just fine. I like SRAM chains with the powerlink. Easier to remove can clean, which makes it last longer.
Yes, the chain is compatible. The CN 7900 is nickel plated and stronger than the CN-5600.
This is a great shifting chain. I am using it on an SRAM Rival set up because it came with the bike. I have had a close call with the chain almost breaking because of an improperly inserted pin from the person I bought it from. Next time I will buy the SRAM Powerlink chain which comes with a link you can take apart by had for easier cleaning.