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Shimano Ultegra CS-6700 Bicycle Cassette - 10 Speed


RRP: $107.78

Save: 57%


Availability: In stock | Usually dispatched within 24 hours


Lightweight with ranges to suit all riders and terrain. Shimano's new Ultegra 6700 Cassette, replacing the 6600 and SL versions.

Key Features:

  • Lightweight 10-speed cassette with rigid alloy sprocket carrier for reduced weight and better shifting performance, even under the most demanding gear changes.
  • Hyperglide sprockets have been designed to reduce weight with improve teeth shaping providing accurate shifting and reduced wear.
  • Wide gear range to meet the demands of all types of rider.
  • Weight: 208g
  • 11-23 teeth (claimed).
  • Also available as part of the Ultegra 6700 groupset.

Product Details


Delivery & Returns

Express Delivery Available

If ordered before 8pm, delivered by courier next working day. Available on orders placed before 8pm (2pm weekends and Bank Holidays) for delivery next business day. Applies to most delivery addresses within mainland UK.

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: In stock | Usually dispatched within 24 hours

Please remember to add postal time (2-3 working days) to obtain a complete estimate of delivery to your door.

How will I know it has been sent?

You will receive an email to confirm when your item has been sent.

You can also check the status of your order and individual items by accessing your account details and following the prompts.

Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.

It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.

If I'm not completely happy with my item?

Please see our returns policy.

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Customer Reviews




(42 Reviews)

  • 5    40
  • 4    2
  • 3    0
  • 2    0
  • 1    0

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Showing 1 to 42 of 42 reviews :
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Great product, unbeatable price

The 11-23 combo is perfect for the flat roads I ride in FL. Ultegra is easy to install and very smooth shifting. I haven't seen cassettes at this low a price, an excellent value, maybe because 11 speed is becoming the new standard. I bought a couple to get me through the next 30,000 miles and am considering a second order. Just a note: it might take a while to receive yours although mine arrived just a day after the estimated delivery date. Don't wait until the last minute.

20 January 2015 by


great value cassette

Great tech and value in this cassette. Recommended.

11 January 2015 by



It was time to change out my Shimano 105 cassette, so I decided to upgrade to an Ultegra. I had one on my Trek and it work good. I have installed this one on my new carbon wheels. I haven't tested it yet, but I know it will performed good.

11 December 2014 by


Ultegra cassette

It's an excellent cassette for training , and racing , specially for the flats of South Florida area . Light , robust , and the best price in the world here .

8 October 2014 by


Consistent Product

You can always count on the Shimano products to be a great product and Probike to deliver at a great price. Thanks

6 October 2014 by


Quality and Quietly Smooth

This cassette is strong, shifts quickly and quietly when properly tuned. The weight savings over Dura-Ace is not going to be felt (certainly there are better ways to save weight--like put less water in your water bottle. Amazing value for the price and rock solid.

16 August 2014 by


Great cassette

Upgrading my travel bike to account for mountainous destinations and advancing age. Wanted a 30 sprocket, so bought a longer cage derailleur and this CS 6700. Works wonderfully, and I'd definitely recommend it.

5 June 2014 by


Nice 10-speed cassette

If you are riding a Shimano 10-speed drivetrain then this is pretty much the best cassette you can get. It comes with a 1.86 mm spacer so that the cassette can also be mounted on wheels designed for 11-speed cassettes. Easy to mount.

28 May 2014 by


Great cassette at a very good price

I ordered this cassette for a friend who had some seriously-worn cogs on his old Ultegra 6700 cassette on his race wheelset. New cassette + new chain = crisp shifting again. PBK's price was unmatched, and delivery was on-time.

12 May 2014 by


Ultegra Cassette

After my local bike shop indicated I needed a rear cassette and chain I starting comparing the pricing and was very impressed with ProBikeKit. Placed my order and 10 days later it was on my doorstep at a significant savings from my local options. Both the cassette and chain were in original Shimano packaging and in excellent condition. They have now been installed and have made the shifting much smoother. Would highly recommend as long as you have the time to wait.

21 April 2014 by


Ultegra Components

Great product in original packaging and came on time. Thanks ProBikeKit for great service.

17 March 2014 by


Ultegra 6700

Ultegra is an incredible bang for your buck and lasts forever. This cassette gives you a few extra teeth for the steep hills here in Colorado, shifts perfectly, and you never have to think about it.

7 March 2014 by


CS-6700 Ultegra Cassette

Bulletproof! I'm not sure why you'd go to Dura Ace on this kind of part. Not a component you want to shave weight on. I run Ultegra or 105 on all my bikes and they wear very well and last. Good value for the money.

24 February 2014 by


Lightweight-Great Gearing

I purchased this cassette for two reasons. . . 1. I needed an additional cassette for my backup wheelset 2. I LOVE having 12-30 gearing! I chose this cassette because of it's weight (12-30 is 270g) my Tiagra 12-30 was over 340g. It shifts very smoothly but my rear deraileur needed adjusted slightly. Not sure why considering they were both the same exact gearing? If you haven't tried 12-30 gearing yet, you will probably love it. I have rather strong legs but the object is to work smarter, not harder on those ridiculous climbs. I could have went with a Sram 11-32 but I would have felt like a school girl spinning a 32 teeth cog :) Great Shimano quality, decent weight, excellent price, attractive ratios. Try one out!

14 January 2014 by


Ultegra 6700 Cassette

These are the ideal compromise of weight vs. durability for a cassette for the recreational rider. 30 tooth gear on this cassette is a great ace in the hole if the hills get too steep or the rider too tired. These were provided as loose parts in a plastic bag like OEM parts would be packaged. This was not stated in the description but at the low price they were offered at, I would have purchased them anyhow. Missing the box is no big deal, but I like to have the plastic center piece to stack the pieces on after I wash them and before transferring them back to the freehub. If you have a 10 speed Shimano drive train this Ultegra cassette is a great deal that won't hinder performance.

4 January 2014 by


A clear choice for value

I have Dura Ace equipment on my road bike and SRAM force and rival mix on my cross bike and on both, when the cassettes needed replacing, I tried the Ultegra level cassette. As compared to the Dura Ace option, the Ultegra is much better value. It is nearly as light, and appears to last a little longer in use. For my SRAM group, oddly, I find the Ultegra cassette shifts more smoothly but that could be because my bike could have been spec'd had a lower spec SRAM cassette. This cassette is a great piece that is a solid value and the performance is also very good.

3 January 2014 by


Stimson cassette 12-30

Put it on right after I got it. A 35 miles ride tells everything. I went uphill without any problem. Did not use too much power as before. This can help me to take easy on my knee which I am having problem now. Love it and will get another one for my other bike. Will have a hilly ride this weekend and I believe this new cassette resolves my problem.

19 December 2013 by


Best Cassette ever!

I must say with all sincerity, this is the best cassette I have bought since The Eagles, The Long Run! Ride on Brotha's!

17 December 2013 by



Nice add on to be able to spin up climbs. After all how many leg presses do you have per day? The body is a much more efficient cardio machine than it is muscular. Spinning is winning, I threw this cassette 12x28 on my race bike and I dig the extra climbing gears. If you were concerned about the top end and needed an 11 tooth, you could always swap it out. Works with my normal sized rear derailleur.

16 December 2013 by


accurate, crisp shifting

I've been using Shimano Ultegra components on my bikes for the last 15+ years. I've never had a component related failure. With regular cleaning and lubrication I have been able to get in excess of 10,000 miles on an Ultegra cassette before I noticed a significant drop-off in performance. I don't have a bottomless bank account, so I chose to go with the modestly priced Ultegra component group over the Dura-Ace. Yes, the Ultegra is a bit heavier, and the finish detail is not as sexy but it's every bit as performance oriented and reliable as the Dura-Ace for much less money. And over the years Shimano seems to trickle down technology and design features from Dura-Ace to Ultegra and even 105 so that the differences become less noticeable. For the price that PBK sells this cassette it was an absolute no-brainer for me. I bought an 11-28 to compliment my 12-25 and provide more gearing options for the rides with significant elevation gain !

3 December 2013 by


Great Cassette

1. Great price from Probikekit as always. 2. Light weight and has the right combination 11-28 to go with my compact crank 34/50. Without this, I wouldn't be able to get to the ski lift at Mount Baldy in southern California. Overall, it is a great cassette to have on days where you have long climbing ahead.

3 December 2013 by


Ultegra 6700 cassette

Found the 12-30 ratio for my climbing helps. Excellent cassette. Shipping is ok speed but a little hairy with no tracking international.

3 December 2013 by


This cassette is perfect for both racing and training. its durable and has great longevity while being stiff, smooth, and light. its also a great upgrade if you are currently running a 105 cassette. Definitely a must have for this price.

2 December 2013 by


Some additional options

Bought this cassette to provide me with a few more options on hillier rides. Performs great!

13 November 2013 by


happy significant other

As the lady friend added road cycling to her biking repertoire, she missed the uber low gearing of her mountain bike. Even the compact/28 tooth cog left her feeling strained on some of the bigger hills in the area. After a determination the rear 105 derailleur could support the larger 30 tooth cog, the change was academic with a slight readjustment f the 'B' screw and was well received (if only the psychological benefit.) Personally, while there is a quality and weight enhancement moving from the 5700 to 6700 cassette, I personally like the gear spacing better . . . so much so I changed out the 12-27 on my 'cross bike with this cassette (total order of 3 cassettes.) For me, it provides the better ratio steps to 27 teeth with a 'bail-out' 30 for old guys like me in the sand and deep mud. Shimano quality, great price, and problem solved.

5 November 2013 by


This will make our mountains a little less painful!

I am in the process of replacing the drivetrain's critical (and worn) components on our road tandem and, for the cassette, rather than replace-in-kind, I chose the Ultegra 12-30T cassette. That because the 30T big cog will make riding around in the mountains of Western North Carolina a lot more pleasant! That benefit on top of a great price and on-time delivery, Thanks!

5 November 2013 by


Ultegra cassette

Excellent cassette. No need for Dura Ace.

4 November 2013 by


Best Shifting Quality Cassettes

I run this cassette on all of my bikes. Best value, especially for the price at PBK. Shifting is butter, and durability outlasts all the hours of riding.

1 November 2013 by


Smooth as butter

This cassette performs fantastically! It was exactly what I needed, and a great upgrade from the old, worn out 105 Cassette I had on my CX bike. Great price, too!

31 October 2013 by


ultergra cs-6700 cassette

The Shimano Ultegra CS-6700 Bicycle Cassette works as expected, great for hills, easy on flats. I would buy again, best price anywhere, will continue to buy from PBK.

31 October 2013 by


I ride on all Dura Ace components except for the cassette and chain which I typically ride on Ultegra 6700/6701. They are more cost effective and the quality is just the same, ie, quality in shifting, etc. The weight saving won't help you go any faster.

25 October 2013 by


Excellent Product

A great upgrade for an even better price!

22 October 2013 by


Great cassette, great price

I got a new wheelset and wanted to avoid swapping cassettes around too much... but didn't have the money to buy a cassette at retail pricing. ProBikeKit's pricing (and free delivery... and free bonus gifts) made the purchase easier to "sell" to my better half. Delivered within the estimated timeframe in good condition. (Have since ordered another CS-6700 cassette 12-30T to have on hand for those "sufferfest" days here in the mountains of western North Carolina, upstate South Carolina & eastern Tennessee when facing sustained gradients of 16-20+ percent.

15 October 2013 by


Never disappoints

This is a great cassette, it is durable, quiet and an excellent value. I bought these for my aero wheel so i could switch wheels as needed and since I had so much with luck with them on my regular road wheel

25 September 2013 by


Great value

I received the Shimano Ultegra CS-6700 Bicycle Cassette for the best price from PBK for this smooth cassette! Now I can climb without hurting my middle age knees. Using this with 6600 front and rear derailleurs and YBN chain, I have no problems mixing component series, so go for it.

23 September 2013 by


ultegra cassette

A quality product and cheapest price around.however I didn't realise it was an English company so delivery slower than expected and it was finally sent from Sweden. All okay though.

26 July 2013 by


Great cassette

Great cassette for the long climbs. Love it and at a great price.

23 July 2013 by



The Shimano Ultegra CS-6700 Bicycle Cassette works awesome. It is a great price.

16 July 2013 by



Product came in on time with shipping and was exactly what I ordered.

9 July 2013 by



First of all this site rocks, fast shipping and quick response to all my inquiries, also cheaper compared to most of the seller online. As soon as this cassette was installed to my BIANCHI C2C I tested it and went ahead to climb the hills that was almost impossible for me to reach the peak with my old 6600 11-25t. To my suprise it was not a battle anymore, was able to complete my usual route with no stopping mid-way nor felt exsausted. Over all, to me it is an excellent upgrade to my bike in regards to ascending ride. Highly recommend to older riders (50 + yrs old like me) or to any rider who are struggling uphill.

3 June 2013 by


Ultegra cassette

Absolutely fantastic deal on this Ultegra cassette. Cheaper than lower end Shimano cassettes at other sites. Even had free nutrition product included in the purchase! Would highly recommend.

13 May 2013 by


Great Product

Purchased this to upgrade for hill climbing from a standard 105. Easy install immediate results - very happy.

29 May 2012 by

Shimano Ultegra CS-6700 Bicycle Cassette - 10 Speed

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Shimano Ultegra CS-6700 Bicycle Cassette - 10 Speed