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Item # SHI0656

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  • Gray, 170x53/39 ($187.95)
  • Gray, 172.5x53/39 ($187.95)
  • Gray, 175x53/39 ($159.98)
  • Gray, 170x50/34 ($187.95)
  • Gray, 172.5x50/34 ($187.95)
  • Gray, 175x50/34 ($187.95)
  • Gray, 170x52/36 ($187.95)
  • Gray, 172.5x52/36 ($187.95)
  • Gray, 175x52/36 ($187.95)
  • Gray, 170x46/36 ($187.95)
  • Gray, 172.5x46/36 ($187.95)
  • Gray, 175x46/36 ($187.95)
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Item # SHI0656

Modeled after Dura-Ace.

With the introduction of Shimano's new Ultegra 6800 groupset, most people's focus was naturally drawn toward the additional gearing options provided by the 11th cog. But the new group is something more than just added gearing; it represents an entirely revamped drivetrain system that now integrates its top-end Dura-Ace 9000 engineering into every one of its components. The new four-arm crankset displays this most clearly, as it pulls the same striking visuals and functionality that have made 9000's cranks so popular in the pro-tour ranks.

It's quite possible that Ultegra 6800's most stunning and recognizable feature is indeed the FC-6800 crankset, as it borrows the best technology from its Dura-Ace brother. On the surface, the FC-6800 is a complete departure from the traditional aesthetics of prior Ultegra. Gone are the days of the five-arm spider, and the necessity for a separate compact crankset has also fallen by the wayside. Instead, 6800 features a shift to a new four-arm spider design. This occured for several reasons, but most notably it's because the four-arm spider matches rigidity of Dura-Ace cranks while shedding close to 26g of weight over 6700. Also similar to Dura-Ace 9000, the 6800 cranks were built with Shimano's Hollowtech II construction. Over the past few iterations of Dura-Ace, this manufacturing methodology has played an integral role in attaining weight reduction without sacrificing Dura-Ace's superior stiffness. This, again, is a welcome improvement over the previous version of Ultegra.

Shimano has learned what works, and over the years has continually added to, and improved, the ideology of Dura-Ace, which now carries over extensively to Ultegra 6800. Hollowtech II and Hollowglide are prime examples of this. Strategic placement of hollow aluminum throughout the crankset and chainrings allows more structural material to be used, and when coupled with Shimano's integrated bottom bracket, creates an unrivaled weight-to-stiffness ratio.

The four-arm spider amplifies this characteristic, but more important to Shimano, it embodies its 'rider-tuned' philosophy. In this, Shimano created 6800 to work for you, the rider. Case in point, the four-arm design and the 'top-secret' BCD allows for front chainring combinations from 46-36T to 55-42T on the same spider. 

The Shimano Ultegra FC-6800 11-Speed Crankset is available in sizes 170, 172.5, and 175mm and in 50-34, 52-36, and 53-39 chainring options. Shimano has also added a cyclocross-specific 46-36 combination in all three crank arm lengths.

  • 11-Speed Crankset
  • Hollowtech II Design
  • 4-arm spider accommodates chainring sizes from 46-36T to 55-42T
  • Compatible with Shimano 6800, 11-speed shifters and chainrings

Tech Specs

Arm Material:
Arm Length:
170 mm, 172.5 mm, 175 mm
Chainring Sizes:
46/36, 50/34, 52/36, 53/39
Compatible Components:
Shimano 11-speed
Recommended Use:
Manufacturer Warranty:
2 years
Actual Weight:
Gray, 170x53/39: 765g; Gray, 172.5x53/39: 765g; Gray, 175x53/39: 765g; Gray, 170x50/34: 765g; Gray, 172.5x50/34: 765g; Gray, 175x50/34: 765g; Gray, 170x52/36: 765g; Gray, 172.5x52/36: 765g; Gray, 175x52/36: 765g; Gray, 170x46/36: 765g; Gray, 172.5x46/36: 765g; Gray, 175x46/36: 765g

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  • Familiarity: I've put it through the wringer

I use the 50/34 (compact) in the mountains around Salt Lake City. I'm a big dude (210 lbs) and it handles the abuse. The dark grey color makes any bike look good.


  • Familiarity: I've put it through the wringer

It is hard to beat the reliability, quality, and acceptable weights that are offered by Shimano's Ultegra group. These cranks are plenty stiff for most riders and offer excellent shifting.
For the money, you really cannot do better than the Ultegra cranks.

An Excellent Piece of the Puzzle

  • Familiarity: I've used it several times

While Ultegra 6800 is very much the sum of its parts, this crankset ends up playing a notable role in the overall performance.

While it may lack the shiny Dura-Ace looks and packs a few more grams, this is really is a top-tier crank. Construction delivers the level of polish you expect from anything carrying the Shimano name.

Paired with the Di2 front derailleur I have found the shifts to be fast and reliable no matter the situation. The shift up to the big ring is particularly impressive and at times so immediate I question whether the shift happened at all.


  • Familiarity: I've put it through the wringer

A definite improvement over the previous model in that the shift from the smaller chainring to the larger one is extremely smooth; it's almost as if you have to look down at the chainwheel to see if the shift occurred. More durable but heavier then the dura ace, but at a much more affordable price. No flex in the crank arm, stiff and smooth.

Unanswered Question

I have a FSA Gossamer BB30 crank on my Specialized Secteur. Will I need any type of conversion kit for this crank or will it fit without any alterations?

Avg. ride time: 5h 50m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

crank arm broke off

  • Familiarity: I've put it through the wringer

was using it for about a year and it started bending on the weld part where crank arm is connected and just snapped right off on a climb standing. got dura ace instead.happy for now

Unanswered Question
Avg. ride time: 2m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

I have an old Trek 5200 with a FC-6503 crankset and BB-6500 bottom bracket. I'd like to upgrade to Ultegra 6800 components but not sure what I need to do with the BB. Any advice? Thanks!

Will this work on my BB30? I've read something about some kind of adapter....

You would have to have an adapter. Item # WHL0004

Ultra Hollow Crankset

  • Familiarity: I've used it several times

Last winter, I totaled my 7 year old S-Works Roubaix, and miraculously, it was covered by my homeowners' insurance. I had my local shop build a new bike on a current S-Works SL4 frame, using Dura-Ace Di2, but I used the Ultegra crankset because I just though it looked cooler. I've had no problems with it.
Last week, my stepson salvaged what we could from the wrecked S-Works Roubaix and built a bike for my son using my son's old steel LeMond Buenos Aires frame. Once again, we used an Ultegra compact crankset (the carbon cranks from the wrecked S-Works wouldn't work), and we were surprised to see that the tool that tightens the crankset to the English threaded bottom bracket (cheap piece of plastic) wasn't included in the retail packaging for the crankset. I can understand why shops would have this tool at their disposal, but I cannot imagine any reason not to include it in the retail packaging.

Other than that one little gripe, I'm very pleased.

Can you put the Dura Ace 54t chain ring on this crankset? Or ... Does Shimano make a 54t ring for the Ultegra crank ??

I'm looking for the same, but haven't found that answer here or somewhere else. I'll probably put ROTOR QXL 54/42.

Unanswered Question

I'd like to upgrade my mixed Shimano 9 spd drivetrain (ultegra 9spd brifters, 105 9spd front/rear derailleur, 105 5750 10spd compact crankset, ultegra 6500 9spd 12-27 cassette, and LX HG73 9spd chain) to full Ultegra 6800 drivetrain. Due to cost, I'd like to do this in stages, understanding shifters/derailleurs/cassette/chain will need to be done together, at minimum. Question is, can I upgrade crankset to Ultegra 6800 11 spd 52x36 and run as is until I can get remainder of components?

Avg. ride time: 5h 40m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Hello, I have a road bike with a 10-speed Shimano 105 group and want to upgrade some parts to the new 11-speed Shimano. Are the groups compatible, will this 11-speed crankset work with 10-speed components? Thanks

The groups sets are not compatible but the crankset is. I ran the 11 speed crank last year with a 10 speed groupset.

Unanswered Question

Any issues putting this on a QR Kilo currently running FSA Omega crankset / MEGA EXO BB? Also running 10-spd SRAM Rival. Any issues with 10 speed? Thanks!

My road bike is Ultegra Di 10 spd equipped but the crank is a rebranded SRAM APEX crank. I would like to swap it out with an ultegra 6800 compact 50/34. Will this work? Do I need a new BB as well?

While we have not tested it here, there are reports that you will be fine running 6800 11 speed cranks with the 10 speed group. You will indeed to get a new shimano based bottom bracket. Call me at extension 4769 if you have any questions.

Have found out that ultegra 6750 is still available. That is the 10 sp compact crank. 11 speed cranks are designed for a narrower chain.

A larger chain will work in the 11 sp crank but it may be noisy.

I ran the 6800 with a 10 speed group set all last year with the 6700/7900 chains no issue once so ever the 6800 is stiffer and lighter by far then the 6700 series no reason not to go with the 6800

I have and FSA 11 speed crankset ( stock on my 2014 Felt B14) with a BB30 bottom bracket will I be able to install an ultegra 11 speed crankset.

only with conversion kit shimano 24mm to bb30 or new bottom bracket


Avg. ride time: 5h 3m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

I currently use 105 and wants to upgrade to Ultegra 6800. My Tarmac uses BB30, will I have any issues?

Best Answer

If you currently have a 105 crank on there, you already have some type of adapter to go from BB30 to Shimano's 24mm spindle. All Shimano spindles are the same diameter, so you'll be fine. Just take the old one off, put this one on, and you'll be good. Remember you'll need the special tool that fits into the black plastic cap that is on the non drive side to loosen and tighten the crank.

Unanswered Question

Would this work with my bike (without upgrading other components) if I currently have a triple ring 52/42/30T with a 9 speed cassette. I have a front derailleur shimano sora FD-3403 9 speed, and a rear derailleur tiagra for 9 speed.

I suppose I'm worried about it being compatible with my front derailleur and shifter... Common sense would say that I would need to change them, but I just wanted to check.