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Shimano
Ultegra CS-6700 10-Speed Cassette

$70.99ea.
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Shimano's Ultegra-level 10-speed features trickle-down technology from their 10-speed Dura-Ace 7900 group, and is a great choice for those looking to save a little cash without sacrificing performance or adding too much weight. Shimano's tight manufacturing tolerances allow for a strong and quick-shifting cassette, with revised ramps for higher performance than previous versions, even under load. Machined holes in the larger cogs help reduce weight, and the last three cogs are held together with a lightweight alloy carrier.

Compatible with Shimano and SRAM 10-speed systems. Weight: 236 grams (12/25). Available gearing options:

  • 11/23 Tooth (11, 12, 13, 14, 15, 16, 17, 19, 21, 23)
  • 11/25 Tooth (11, 12, 13, 14, 15, 17, 19, 21, 23, 25)
  • 11/28 Tooth (11, 12, 13, 14, 15, 17, 19, 21, 24, 28)
  • 12/23 Tooth (12, 13, 14, 15, 16, 17, 18, 19, 21, 23)
  • 12/25 Tooth (12, 13, 14, 15, 16, 17, 19, 21, 23, 25)
  • 12/30 Tooth (12, 13, 14, 15, 17, 19, 21, 24, 27, 30)

 

Weight: 236 grams

 

Weight: 236 grams

 

Freehub Compatibility: Shimano/SRAM 8/9/10 

 

Freehub Compatibility: Shimano 10 Speed Only 

 

Group Compatibility: Shimano 10 Speed 

 

Group Compatibility: SRAM 10 Speed 

 

Cassette Type: Shimano 10 

Ordered by Most Relevant First
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(57)
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A great upgrade over 105
by Jon B
Cycling Enthusiast
OKC,OK

A superb upgrade over the heavier 105 that came on my TREK. Approx. 100 grams lighter and super smooth.

Reviewed 5/20/2019
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Happy, happy, happy, happy, happy, (one happy for each star).
by Dtuning
Cycling Enthusiast
Brooklyn, NY, Florida, NY, Trumbull, CT

I have a 10-speed road bike with Shimano Ultegra components. The cassette range was 12-25. Both my daughters live in areas that are quite hilly and I started to feel that I needed a little help every once in a while. I decided to try this Shimano Ultegra cassette with a range of 12-30. Switching the cassettes was no problem. Shifting is still perfect. I did not have to increase the chain length or purchase a long cage derailleur. Everything feels great. I sometimes miss the 16 tooth cog but it is not much of an adjustment to make for my pedaling ability. I am extremely happy with this purchase.

Reviewed 5/20/2019
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part is exactly what I am looking for. and the service was good too.
by Anonymous
Daily Commuter
florida

I do road bike only for training use and I love it. have the 38-11 and I like how works.

Reviewed 5/13/2019
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Works well with UDi2
by Anonymous

I decided to try a slightly larger cassette at it's made climbing steep hills much easier. This cassette was easy to install and works great with my Di2 system.

Reviewed 4/25/2019
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Outstanding cassette at a great price!
by Steve
Daily Commuter
Murrieta, Ca.

I ordered this cassette to install on a wheel I also ordered. It went on easily and now have over 500 miles on it. Great product at a great price!

Reviewed 7/1/2018
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Works Great-no shifting problems
by Anonymous
Great state of Louisiana

Making a decision on the internet on what store to order bike parts can be difficult. Friend of mine told me about this company. Will order all my parts from them. Customer service is great, shipping was on time. Good prices and selections of cassettes.

Reviewed 4/5/2019
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consistently reliable Shimano performance
by EPcycle15
Cycling Enthusiast
Minneapolis

used on gravel bike that is used year round in Minnesota with a variety of terrains and climates, Ultegra cassettes have never failed to deliver smooth gear changes regardless of the ice, sand, mud, snow conditions exposed to.

Reviewed 1/10/2019
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Does what it is supposed to do
by Jack
florida

It is a cassette. Not much more can be said it is reliable

Reviewed 11/30/2018
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Smooth shifting when paired with SRAM Red derailleur.
by Zoom
Des Moines, and throughout the U.S. and Europe

Smooth and precise shifts are the norm when used with a SRAM Red derailluer on my road or gravel bike.

Reviewed 10/22/2018
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Happy with purchase
by Anonymous
Cycling Enthusiast
Sacramento

I find using all Shimano drivetrain parts results in a well-engineered system and smooth shifting. This cassette works very well with the rest of my bike.

Reviewed 10/11/2018
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Excellent cassettes - ORiginal replacement
by Anonymous
1 of 1 customers found this review helpful.

Replacement of my original cassette with a larger 30 tooth cog. Excellent fit and quality.

Reviewed 9/17/2018
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Works as expected
by Anonymous

Great option for an extra wheelset

Reviewed 8/20/2018
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good value, received quickly, no problems
by Michael D
Cycling Enthusiast
Denver,CO

11-28 good compromise and does not need longer derailleur cage, Ultegra quite light

Reviewed 8/6/2018
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Very Happy With the results
by Anonymous
Cycling Enthusiast
Buffalo, NY

Easy to install with the right tools. Glad I made the change to this cassette.

Reviewed 7/30/2018
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needed 12-30 excellent results
by Tom
Cycling Enthusiast
L.I. New York

heavy compared to my preferred dura ace unit not available in 12-30

Reviewed 5/12/2017
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Got gears you don't use?
by Anonymous
Daily Commuter
Sunnyvale, CA

Your bike probably has highlow rear cogs you don't use. Get a tighter cassette - awesome upgrade!

Reviewed 7/16/2018
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no problem, prompt delivery, good price and value
by Michael D
Cycling Enthusiast
Denver, CO

almost 1 oz lighter than previous version, so quite light. Dura Ace is a waste of money for 99% of riders in my opinion.

chose 11-28, versatile, no need to change to long cage derailleur, I use with compact in front (road bike) and mid in front (tri bike) hilly here and I am not young.

Reviewed 7/19/2018
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Works well.
by Weekend Road Rider
Casual Cyclist
Silicon Valley, CA
1 of 3 customers found this review helpful.

When the road bike had about 16,000 miles on it, the shifting started becoming erratic. The chain would jump between gears on the rear cassette, and cleaning and carefully adjusting the rear deraileur didn't help. I replaced the cassette, the chain (which only had about 4000 miles on it), and the shifter cable, all at the same time. Now the shifting works fine, but I'll never know if it was the cassette, the chain, or the cable that fixed the problem. The cassette is well made and easy to install if you have the right cassette tool and chain whip, otherwise it would be very challenging. The next time I encounter shifting problems, I'll start by just replacing the cable before replacing the more expensive parts.

Reviewed 3/28/2017
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Exact cassette i needed.
by Anonymous
Cycling Enthusiast
Oklahoma
1 of 1 customers found this review helpful.

My old cassette was pretty worn so when I saw the Ultegra was on sale, I jumped on it. Great quality product at a great price....Thanks Bikeworks!

Reviewed 2/2/2017
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Solid Value, Great Quality
by IslandRider
Competitive Racer
Maui Hawaii

If you can't spring for the ridiculously priced DA or SRAM Red cassettes, Ultegra offers great quality, reasonable weight and a wide variety of gear-size options for a very affordable price point. I own at least six of these cassettes, in various tooth sizes, and they just do what they need to. Before living in Maui, I raced CX every year in Oregon and used these cassettes in brutal conditions where they'd get completely abused, packed with mud and debris and forced to keep on going. After post-race clean up, they were good as new. Important to always grease the splines on the cassette body when installing to extend the lifespan of both cassette and cassette body.

Reviewed 6/15/2018
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