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Description

Crispy shifts.

We'll tell you straight up that while we appreciate the appeal of Dura-Ace cassettes, we understand why you would choose Ultegra for your bike. Smart racers routinely save money by going with Ultegra cassettes; the money saved can go for other weight shaving measures.

On the plus side, Shimano Ultegra CS-6700 Cassettes are lighter than their 6600 brothers, doing a nice job of closing the gap on Dura-Ace. The tallest cogs are riveted onto an aluminum carrier for weight savings, and they're more gentle on aluminum cassette bodies. Shimano has improved their manufacturing quality; now they can make the ramps stronger because they can build to tighter tolerances. And the ramps themselves have been revised for faster shifting.

The Ultegra CS-6700 Cassette has ten cogs and comes in the following ratios: 11-23, 11-25, 11-28, 12-23, 12-25. It comes with a nice alloy lock ring. The finish is Chrome (a color, not old-style chrome-plating).

The 11-23 includes: 11,12,13,14,15,16,17,19,21,23
The 11-25 includes: 11,12,13,14,15,17,19,21,23,25
The 11-28 includes: 11,12,13,14,15,17,19,21,24,28
The 12-23 includes: 12,13,14,15,16,17,18,19,21,23
The 12-25 includes: 12,13,14,15,16,17,19,21,23,25

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Shimano Ultegra CS-6700 Cassette

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Here's what others have to say...

Is this a 10-speed or an 11-speed?

Posted on

Is this a 10-speed or an 11-speed?

Responded on

10-speed. The 6800 series is 11-speed.

5 5

Solid and reliable

  • Familiarity: I've put it through the wringer

My favorite cassette by far, great shifting and price allows me to have enough cassettes for training and race wheels.

I have a 50/34 compact front and 12/25...

Posted on

I have a 50/34 compact front and 12/25 10-speed Ultegra CS-6700 rear cassette on a 2012 Cervelo P2. I'm not a small guy and struggle on some of the local IMWI hills. Would the 11/28 rear cassette work and do I need a new chain? Thanks for your advice! Peter

Responded on

The 11/28 would work as long as it is within specification of your rear derailleur, may require a medium cage. Check your RD model number on shimanos site and it will give you that info. As for the chain, you should be fine.

5 5

Performance at the right price

  • Familiarity: I've put it through the wringer

This cassette offers many different sizes for different terrains. I use a 12x23 on the flat roads where I live and a 11x25 when I travel to the mountains. The shifting is excellent and the price point allows you to replace the cassette as it wears out without breaking the bank.

5 5

Excellent

  • Familiarity: I've put it through the wringer

I think I've said this before on other items but its true: Its Shimano! its going to be awesome. I've ridden Dura Ace, 105 and Ultegra and for the money Ultegra wins hands down. I went with 11-28 for cross season.

I have a FSA Gossamer 50/34 crank with...

Posted on

I have a FSA Gossamer 50/34 crank with Ultegra 6700 Rear and Front Derailleurs. Will this cassette work on my bike (it is a 2013 Cervelo P2)? What gearing would you recommend for New England's hilly terrain?
Thanks,
CM

Responded on

This cassette will work. Go for the 11 x 25. On a compact crank a 34/25 ratio will get you over the hilly terrain.

5 5

Great gear ratio

This is a fantastic cassette. It is very durable and light weight. I got the 11-28 to help assist in climbing our steep Utah canyons. The gear ratio is awesome and definatly helps to easy my achy, aging knees! It sucks getting old.

5 5

upgrade for my Pinarello FP Team

  • Gender: Male
  • Familiarity: I've used it several times

my '12 FP came with the 105 cassette and immediately upgraded to the Ultegra completing the drivetrain to full Ultegra components. I went with the 12-25 ratio that the stock set up called for.

5 5

Great affordable replacement for D-Ace

Live in Utah and spend a lot of time climbing, my bike came with Dura-Ace and I just couldn't bring myself to dish out the cash for an 11-28 Dura-Ace cassette. Really negligible weight difference and way cheaper. My last Ultegra cassette went 3 years commuting and was still fine when I sold my old bike. Best value in cassettes, unless you race for a living this is the one.

Will the CS-6700 11-28 cassette work as...

Posted on

Will the CS-6700 11-28 cassette work as replacement for CS-4600 10 speed 12-30? What do you think about chain length?. Bike is full TYiagra compact double 50/34 up front.

TKS!

Responded on

I would recommend that you consult your local bike shop mechanic (and you could be a nice person and buy him or her a drink in exchange for the advice). But if you are the "do it yourself" type... this would be a suitable replacement, you won't miss that 30 tooth cog. Ultimately, chain length will not be a problem, although you may have to shorten the chain slightly. Just ensure that your current chain is compatible with the CS-6700 (and isn't worn out). If it is significantly worn or stretched, get a new one.

That said, I would check the minimum capacity of your rear derailleur, verify that it can work with an 11 tooth cog (it probably can). The upper capacity won't be an issue since it currently manages 30 teeth. Hope this helps.

5 5

Best Value

I pulled the dura ace 12-25 in favor of the 11-28 6700. Why? Because of price. Works just as well as the 7900 at 1/2 the cost. Sure it adds a couple of grams but to be honest I can't tell the diffrence. I wanted a 11 for the down hill and 28 for the climbs. I have loved having the extra high and extra low gears here in Utah. We have some good hills and I have a few extra pounds I haul around. All the rest of the parts are 7900.

Write your question here...I have a 52/39/30...

Posted on

Write your question here...I have a 52/39/30 triple crank and a 11-25 cassette. I want to ride the GranFondo in Santa Rosa. Cadence is dropping quite a lot on practice hills. Will a 12-28 cassette work for me? Do I need a new chain?

Responded on

Yes, the 28 tooth will help a bunch. However, if you have the cash, you would be better off with a compact double crank (50, 34). That 30 tooth front gear is not doing you any favors, and 39 is a few teeth too many. 34 front + 28 rear = mountain climbing status. Nothing will stop you!

If you stick with the triple crank and throw on a 12-28, you will need more chain. Good luck.

I have a Shimano Ultegra FD-6700 derailleur...

Posted on

I have a Shimano Ultegra FD-6700 derailleur setup on my bike with a 53x39 SG-X crank. Can I run the 11x28 with this and if so, do I need to change my chain length? Thanks.

Responded on

Yes, 11-28 will work well with your described kit. However, FD does not impact chain length. More importantly, what is the size of your largest sprocket in your current cassette? If it is anything other than 28, you may need to adjust your chain.

4 5

Pretty good

Good enough shifts, but some noticeable limitations when shifting under load. Understandably not Dura-Ace or SRAM Red, but I expected a little more from Ultegra.

Responded on

That's not an Ultegra limitation; no mechanical system is designed to shift under load.

I am running an Ultegra SL drivetrain...

Posted on

I am running an Ultegra SL drivetrain (RD-6600G on the back, I believe) with a CS6600 11-25 on one wheel set and 11-23 on another. I would love to put a CS6700 11-28 on one but have heard/read that my rear derailleur can not handle the 28? Is this true? Do I have to hunt down a CS6600 12-27?

Responded on

28 tooth should be fine-rated cog capacity is usually correlated to what size cassettes the manufacturer is offering at the time. Shimano's largest cassette cog offered was 27 tooth when the 6600 series came out. With the 6700 series they added the 28-tooth option. More info. here under capacity: http://sheldonbrown.com/gloss_ca-g.html.

Responded on

Write your answer here...I think I had the same set set up as you and I moved to Europe. There are a lot of steeper grades over here, so I threw on an ultegra 12-30 and it worked great.

Responded on

I think I have the same set up, and thew a ultegra 12-30 on and it works great.

I currently am running a 11-25 rear 10...

Posted on

I currently am running a 11-25 rear 10 speed cassette with a 53/34 front. I'm looking at installing an 11-28 rear 10 speed cassette to help with climbing. Will this work and will I need to replace my current chain?

Best Answer Responded on

Yes it will help if you find yourself on the small front ring and the largest rear ring and still not able to get the cadence you want, no you don't have to replace your chain. You should avoid riding on the 53 front ring and the 28 tooth rear anyway as it stresses your drivetrain too much to have it crossed liked that, and that is the only combo that might have an issue with chain length. Are you sure you have 53/34 up front? That doesn't sound right, as it is not a stock combo that Shimano makes. Usually you have 53/39 (130 BCD) or 50/34 (compact 110 BCD). A 53/34 is possible on a compact crankset but I've not seen it and you would likely have shifting issues anyway (i.e. dropped chains) with such as large difference. If you have 53/39 up front currently you could also switch to a compact crankset to help with the hills (50/34) although you would need to buy a whole new crankset (because the bolt circle diameter or BCD must be smaller to get less than a 39 tooth).

i have shimano 105 set up with crank arm...

Posted on

i have shimano 105 set up with crank arm with 3 chain rings. I plan to change crank with compact dura ace which has 2 chain rings. does this create a problem with the shifting of gears?

Responded on

Yes, your "triple" front derailleur will most likely not work correctly with a "double" crankset right "out of the box." Your chainline will be messed up (check http://www.sheldonbrown.com/chainline.html for info. on chainline). Your left shifter will also likely give you trouble if you have 10 speed 105 (10 cogs in the rear cassette) as it has different model shifters for double and triple. 9 speed 105 shifters are compatible with both double and triple. It may be possible to get it to work consistently by adjusting your front derailleur limit screws, etc. (I'm not even sure how much you can adjust 105) so that it will shift from the small chainring next to large and then just not ever click shifter to the third level but it will take some tweaking/adjusting on your part. Check here: http://www.bikeforums.net/archive/index.php/t-444962.html

5 5

Ultegra Cassette, 10-speed

Great cassette. Works great with SRAM, or Dura-Ace. I generally choose this cassette as the price is very nice, and it works great as a cheaper alternative to Dura-Ace. Running Shimano drive train on SRAM is a very nice thing to do also. You can't go wrong with this cassette option.

5 5

Great Cassette

These cassettes have a great smooth feel to them just like the rest of the 7900 series drive train parts! Since they are so smooth together they are quite and seamless.

Responded on

This is 6700 series Ultegra. 7900 is Dura-Ace.

Responded on

I've been running Ultegra clusters on my Dura-Ace bike for the past couple years. No problems at all. With Ultegra clusters at half the price of D/A, it is a "no brainer".

I have a SRAM FORCE 53/39 crankset and...

Posted on

I have a SRAM FORCE 53/39 crankset and ultegra shifters,cassette and mech. I would like to ask first if the cn-6700 chain is compatible with the above setup and works smooth and second if a sram cassette with an sram chain it would work better?

Responded on

SRAM and Shimano are compatible with each other. If you run Shimano shifters, the Shimano or SRAM drive train set-up will work. My personal preference is for Shimano, but either will work in either combination. The only thing to look out for is the hub-body. If you have a SRAM hub-body, just be wary the ridges on it are not too high. There are some SRAM hub-bodies that have higher ridges, so the Shimano cassette might not work.
If you have had a Shimano cassette on before, you can go with either the Shimano or SRAM option. You can also go with any of the 10-speed products from either company.
Hope that helps you

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