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ShimanoUltegra CS-6700 Cassette

Sale 30% Off$49.99 $70.99

Item # SHI0259

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  • 10 Speed, 11x28 ($49.99)
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Item # SHI0259

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

  • Tallest cogs riveted onto aluminum carrier for durability
  • Variety of ratios for versatility
Tech SpecsWeight
Tech Specs
Cog Sizes
11 x 23 t, 11 x 28 t, 12 x 23 t, 12 x 28 t
Carrier Material
Hub Type
Recommended Use
Manufacturer Warranty
2 years

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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10 Speed, 11x28

Claimed Weight

Claimed weights are provided by the vendor.

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209 g

Reviews & Community


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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.

Unanswered Question

Will the CS6700 work with a SRAM Red crank and chain?

Excellent cassette

    Have 1500 miles on it so far and I’m loving that it’s still in very good condition! Wish they had the 12t option

    Great product

    • Familiarity: I've put it through the wringer

    I bought this for my smart trainer, and it works as expected.

    Light, durable, and cost effective

    • Familiarity: I've put it through the wringer

    I have this on my every day bike. My favorite gear has yet to burn out. Can't be happier.

    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.

    Inexpensive lightweight-ness...

    • Familiarity: I've put it through the wringer

    Love these 10 speed cassettes! Lightweight, cheap, and crisp shifting. Plus backcountry always has great deals on them!

    Inexpensive lightweight-ness...

    Thanks for the review Sterling! Super helpful to get this feedback out to the community.

    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 been asking my self the same question there are a few answers at this link - http://www.velocipedesalon.com/forum/f40/7800-cassette-supply-drying-up-27886.html


    Great Cassette

    • Familiarity: I've put it through the wringer

    I use the 11-25 on a DH bike and it works great. Shifts super crisp and is fairly light weight

    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

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

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

        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...

        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.

        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.

        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?



        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.