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  • Shimano - Ultegra CS-6700 Cassette - 10 Speed
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  • Shimano - Ultegra CS-6700 Cassette - 10 Speed

Shimano Ultegra CS-6700 Cassette

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    • 10 Speed, 11x28
      sale $49.99

    23 Reviews


    Step down, go long.

    Shimano’s Ultegra-level cassettes are one of the gems of cycling components. Significantly cheaper than the top-line Dura-Ace offerings, they’re also more durable, and only slightly heavier. And, they’re heavier in the center of a wheel, where their effect is negligible.

    Shimano’s improved its shifting ramps on this iteration, too, meaning the fabulous shift quality you expect from the Japanese component giant is even better than you remember.

    • Tallest cogs riveted onto aluminum carrier for durability
    • Variety of ratios for versatility
    • Item #SHI0259

    Tech Specs

    Cog Sizes
    11 x 23 t, 11 x 28 t, 12 x 23 t, 12 x 28 t
    Carrier Material
    Hub Type
    Claimed Weight
    209 g
    Recommended Use
    Manufacturer Warranty
    2 years

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Perfect mountain gearing

    • Familiarity: I've used it several times

    I needed extra gears to climb the mountain passes around Boulder. This cassette has the ideal gears for the steep climbs without jumps being too big to make shifting ragged.

    Great cassette!

    • Familiarity: I've put it through the wringer

    Easy to install, great quality and lighter from my old 105 set. put them on my race wheels and they work great. I went to the 11x28 to give me 1 higher gear and 1 lower gear and that's helped my riding a lot.

    Best for the Money

    • Familiarity: I've put it through the wringer

    I have used DA, Ultegra, Sram 1050/1070/powerdome and a few other smaller brands, and keep coming back to the ultegra. The higher end cassettes wear out too quickly, even for racing only my DA cassette was toast after less than one season and the Sram Red was not much better. Ultegra is the best balance between shifting performance, weight, and long life. For 85 bucks you really can't beat it. In fact i have an Ultegra 11-25 that i have over 30,000 miles on and its still truckin.

    rock solid performance at reasonable $

      simply works. not too heavy, very strong/durable, and the price isn't outrageous. i'm running dura-ace cranks on main bike, and ultegra cranks on my 2nd bike, both 53/39 with the 12-30 ultegra cassettes which give me some extra range, especially at the lower-end for climbing. the jumps on the bigger cogs in the cassettes are noticeable to the eye, but shifting is still very smooth with both bikes using Ultegra Di2 derailleurs. great all around product.

      Bang for your buck

        If you want to shed a few grams, then put that croissant down. No need for Dura Ace, and compared to Sram's older high end cassettes these Ultegra cassettes are much cheaper and quieter. Worth every penny, and when you can find them for around 50 it is even sweeter. Shifts are smooth and quiet.

        I use Rival shifters, brakes, and rear derailleur with an Ultegra 12-25 cassette, Ultegra front derailleur, Sram Red 53/39 crankset, and yokozuna cables. Couldn't be more satisfied with the performance of my Frankengruppo drivetrain

        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.


        • 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.

        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.

          upgrade for my Pinarello FP Team

          • 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.

          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.

            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.

              I currently have a Dura Ace 7800 (10 spd) front and rear derailleur with a Compact front crank set (50/34). Would the Ultegra CS6700 cassette 11 x 28 work with my setup?

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

              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

              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.

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

              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?



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

              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.


              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.

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

              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?

              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...

              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.

              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.

              I am running an Ultegra SL drivetrain...

              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?

              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:

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

              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?

              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...

              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?

              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 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:

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

              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?

              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

              Is the Ultegra CS-6700 Cassette 11-28...

              Is the Ultegra CS-6700 Cassette 11-28 compatible with a Compact 50/34 crank?

              i have an SRAM Red BB30 compact crankset....

              i have an SRAM Red BB30 compact crankset. Is the ultegra 6700 cassette compatible?

              Yes it will work fine. But if you are using SRAM derailleurs and chain you probably want to stick with the SRAM cassettes because it is is smoother. Another caveat, if you have more that one wheelset sticking with one brand of cassette makes wheel swaps easy, otherwise you will likely have to adjust the low and high stops when you change wheels.

              I have a Shimano CS-5600 11-23 cassette....

              I have a Shimano CS-5600 11-23 cassette. I want to go up to 11-25 to help with climbs. Do I need to stick with the CS-5600, or can I use any Shimano cassette?

              No problem, this CS-6700 cassette and any (except 7800) Shimano 10 speed cassette and even SRAM 10 speed cassettes will work great.

              Don't buy a Shimano Dura Ace 7800 cassette because it won't fit your wheels, it has an entirely worthless Dura-ace proprietary hub design.

              He is correct in that The 6700 and 7900 Cassettes are both compatible with your group and both made in 11-25 combinations.
              The 7800 will also work with your hub or any other Shimano 8, 9 or 10 speed hub out there. The compatibility he is referring to was not in the cassette it was a 10spd specific Freehub that was used in DA and Ultegra hubs and Wheels for a few years.
              NOT the Cassettes they are compatible.

              HI, have a Dura Ace 10 speed 11-23 Cassette...

              HI, have a Dura Ace 10 speed 11-23 Cassette on a 2006 Felt. Want to change to a Ultegra at least 12-27 but also saw an 11-28. I was told that in both cases I would need to change the chain and in the 11-28 I would also have to change the rear derailleur. Whats the consensus. Anything else I need to know

              It is very difficult to say with out looking at the bike. If the chain was put on with the proper 1 extra link then it should be OK but with out seeing the bike I can't be sure. I would recommend ordering a new chain when you order the cassette, chains are relatively cheap and you probably need a new one with the new cassette.
              As far as your R Der the Max R Sprocket of your 7800 is a 27t wile the 7900 R Der is a 28t. Your Der may stretch and make the throw but probably will not be quiet when running in the 28 but its hard to say for sure.