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Shimano Ultegra CS-6700 10-Speed Cassette 11/23 Tooth
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Shimano
Ultegra CS-6700 10-Speed Cassette

Mfg PartNum:
$74.99
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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)

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

 

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 

Mfg PartNum: ICS670010230 

11/25 Tooth

Mfg PartNum: ICS670010125 

11/28 Tooth

Mfg PartNum: ICS670010128 

12/25 Tooth

Mfg PartNum: ICS670010225 

12/30 Tooth

Mfg PartNum: ICS670010230 

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The Ultimate road cassette
by veloptuous
Cycling Enthusiast
Rocky Mountains
1 of 1 customers found this review helpful.

I have been using the Ultegra cassettes for years. You can spend much more on a cassette but you won't get a better one. These work as well as anything and just last and last and last. Dura-Ace might save a gram or two and work the same, but it won't give you the long service life the Ultegra does. If you want a cassette that you can install and more or less forget about all while enjoying beautiful shifts day in and day out - this is it.

Reviewed 7/13/2022
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Smooth shifting, good value
by Anonymous
Cycling Enthusiast
Phoenix AZ
3 of 3 customers found this review helpful.

I needed to replace my 10-speed Dura-ace cassette because of worn cogs and was originally looking for a Dura-ace 10-speed cassette. Not only were they difficult to find, but the few I found were extremely expensive! I "settled" for this Ultegra cassette and I am very glad I did. Not only is it waaay less expensive, but the shifting is just as clean and crisp as my Dura-ace cassette. Even though I know there is a weight difference, I really can't feel it in any way. I have it paired with a SRAM hollow-pin chain and the combination works extremely well. I would definitely recommend this cassette.

Reviewed 5/24/2022
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Great cassette
by ChazMan
Cycling Enthusiast
Metro Detroit
2 of 2 customers found this review helpful.

I have the 12-23 and have probably 10,000 miles on it, rarely going 150 miles or more without a thorough cleaning. Works great! I like the 12-23 because I can stay in my big chainring for all but the toughest climbs on my usual routes, and the middle few gears are only 1 tooth difference so I have that nice stair-step up and down the gears so I'm always in a comfortable cadence in nearly all riding conditions. Never feel like I'm in a gear too low or high.

Reviewed 3/2/2022
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Better than DA
by JoeC.
Cycling Enthusiast
NYC
1 of 1 customers found this review helpful.

11-28 paired with 34-50 chainrings.

Super smooth shifting with DA chain.

Reviewed 7/18/2022
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Outstanding cassette at a great price!
by Steve
Daily Commuter
Murrieta, Ca.
3 of 3 customers found this review helpful.

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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Great upgrade for 10 speed road bikes
by Mac
Cycling Enthusiast
Portland, OR

So fantastic having such a great shop close by. Thanks again.

Reviewed 8/10/2021
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Excellent service
by Anonymous
Casual Cyclist
Maryland
1 of 1 customers found this review helpful.

Getting older and needed the extra gearing for the hills!

Reviewed 7/7/2022
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Replaced original equipment on Trk Crossrip
by KCarroll
Cycling Enthusiast
Missouri
1 of 1 customers found this review helpful.

Paired this cassette with 105 components on my 2013 Trek Crossrip. Worked great.

Reviewed 6/23/2022
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It's a Cassette! It helps propel you FASTER!
by j white
Competitive Racer
Texas

It's an Ultegra 10 speed cassette. Low frill, more reasonably priced, decent enough weight. It's the top of the value bracket. I put this on a smart trainer and it's perfect.

Reviewed 4/21/2022
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Shimano drive trains deserve Shimano replacement parts
by Anonymous
Cycling Enthusiast
Shreveport, LA
1 of 1 customers found this review helpful.

Shimano parts, especially Ultegra, are a bargin when you factor in the quality in all aspects and the durability when maintianed.

Reviewed 8/12/2021
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It. Just. Works.
by Anonymous
Cycling Enthusiast
Arvada, CO

Easy to install. Works just as expected, with no shifting issues whatsoever.

Reviewed 8/9/2021
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Great purchase
by Anonymous

Great part obviously, good price and delivery

Reviewed 8/3/2021
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Good durable product
by DuckFan bike rider
Cycling Enthusiast
Eugene, OR
1 of 1 customers found this review helpful.

Replaced a well worn Shimano cassette and chain at the same time. Both new components work well together.

These parts were used to rebuild an old (1982) steel frame bike. Nice improvement!

Reviewed 11/16/2020
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Cassette and Shimano RS 500 Wheelset
by Michael Reese
21062 E. Via Del Sol, Queen Creek, AZ 85142
2 of 2 customers found this review helpful.

Bought this Ultegra cassette to go wih my new wheelset. I concur with claim that is better shifting. It is very smooth and precise.

Also, enjoying the new wheelset. They are lighter than my old Mavic wheels. They roll better, ride better and give me the option to go tubeless in future.

Reviewed 10/14/2020
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Easy fit
by Rich
Cycling Enthusiast
Madison, WI
3 of 4 customers found this review helpful.

This was an upgrade to make the hills a little easier. Not surprisingly, it was an easy fit to replace the existing Shimano 10-speed cassette. The 30 tooth cog was one size larger than spec'ed by Shimano for my derailleur, but it shifts well and didn't require a modification of the chain. Easy and inexpensive upgrade.

Reviewed 8/24/2020
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needed 12-30 excellent results
by Tom
Cycling Enthusiast
L.I. New York
1 of 1 customers found this review helpful.

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

Reviewed 5/12/2017
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Works well.
by Weekend Road Rider
Casual Cyclist
Silicon Valley, CA
3 of 5 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
3 of 3 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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easy to change out, shifts well
by Anonymous
Cycling Enthusiast
the mts. between Scappoose and Vernonia, or.
3 of 3 customers found this review helpful.

If I had paid more attention to my worn out chain, I wouldn't have had to change the cassette yet. It works, shifts good, no problems

Reviewed 6/20/2020
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works perfect, runs and shifts smoothly!
by Kilorider
Competitive Racer
San Francisco, Ca
1 of 1 customers found this review helpful.

Used it for a hard TT climb where a 23 was too big, the 28t was great.

Reviewed 1/9/2017
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