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Shimano Ultegra FC-R8000 Crankset 165MM - 50/34 Compact
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Ultegra FC-R8000 Crankset

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Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Get cranked.

While most riders look to the Dura Ace groupset for the best-of-the-best, but with the R8000 groupset Shimano sought to bring that pro-proven performance to a more affordable price with only a slight weight gain. With a redesigned crankset that pulls the features and technology down from the 9100 level, the FC-R8000 is designed to minimize weight without sacrificing stiffness. With a wider gear pitch, this crankset is designed to fit into a variety of frame styles and geometries.Designed to provide riders with choice without complication, the FC-R8000 is available in standard compact, semi-compact, or cyclocross gearing options, with crankarms from 165mm – 175mm in length.


  • Claimed weights: 681g (52-36t), 674g (50-34t), 668g (46-36t).
  • Redesigned crankset featuring trickle-down tech and design from Dura Ace 9100.
  • Lightweight crankarm design flows seamlessly into 4-bolt spider for optimal stiffness.
  • Hollowtech II construction.
  • 11 speed compatible.

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.

165MM - 50/34 Compact

Mfg PartNum: IFCR8000AX04 

170MM - 50/34 Compact

Mfg PartNum: IFCR8000CX04 

172.5MM - 50/34 Compact

Mfg PartNum: IFCR8000DX04 

175MM - 50/34 Compact

Mfg PartNum: IFCR8000EX04 

165MM - 52/36 Semi Compact

Mfg PartNum: IFCR8000AX26 

170MM - 52/36 Semi Compact

Mfg PartNum: IFCR8000CX26 

172.5MM - 52/36 Semi Compact

Mfg PartNum: IFCR8000DX26 

175MM - 52/36 Semi Compact

Mfg PartNum: IFCR8000EX26 

165MM - 46/36

Mfg PartNum: IFCR8000AX66 

170MM - 46/36

Mfg PartNum: IFCR8000CX66 

172.5MM - 46/36

Mfg PartNum: IFCR8000DX66 

175MM - 46/36

Mfg PartNum: IFCR8000EX66 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Solid upgrade
by Tony
Competitive Racer
Portland, OR
1 of 1 customers found this review helpful.

I upgraded from a really beat-up FC-6800. Cosmetically this looks great and functionally it works just like I would expect. Easy installation and very solid components. I will be using this for gravel, road, and cyclocross. The road compact 50/34 is a good option for being able to keep my cadence on flat road as well as have a 1:1 climbing ratio when paired with an 11-34 cassette.

Reviewed 3/12/2021
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Solid shifting
by Anonymous

Solid shifting, nearly as stiff and light as Dura Ace for 40% $ less.

Reviewed 6/5/2020
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Fantastic product.
by Anonymous
Cycling Enthusiast
Vancouver, WA.

Bought a full build of the newest iteration of the Shimano Ultegra gruppo, including wheels. I do not regret it whatsoever. Everything is beautiful and works flawlessly.

Reviewed 8/20/2020
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Great performance
by Dr. Mike
Cycling Enthusiast
Park City Utah
0 of 1 customers found this review helpful.

Currently at the end of a 6 week stay at Park City, Utah. Purchased this compact crankset to replace my 9100 Dura Ace South Florida flatland 5339 crankset for my trip to Park City. Has worked flawlessly with my DI2 Dura Ace groupset. Frankly tongue in cheek has done much better than me dealing with the 7000 feet altitude. For the money you just cannot beat it.

Reviewed 8/26/2019
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Amazing service
by E-man S-Works
valencia CA
1 of 2 customers found this review helpful.

Product is phenomenal. The 165mm cranks suites me perfectly since I a am a short rider.

Reviewed 5/31/2019
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Great Price
by Anonymous

Besides being affordable, shipping was fast. I purchased this item in size 3236t, which I couldn't find anywhere for this price, not even on eBay.

Reviewed 4/26/2019
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Best value in new cranks on the planet
by VeloBoy
Cycling Enthusiast
Novato, CA
4 of 4 customers found this review helpful.

I considered these cranks as a replacement for my venerable Shimano Dura Ace 7850 Compact cranks. The problem was, I'd worn out the big chainring of my classic 7850 crankset and purchasing a new chainring was more expensive than the full price of the Ultegra modernized upgrade (lighter and stiffer).

I was not disappointed...the Ultregra replacement performed flawlessly with my SRAM Red eTap WiFli setup. The front derailleur shifting was noticeably improved, and just as stiff (if not more) than the Dura Ace it replaced.

Just goes to show that the Shimano trickle down technology is very real and rewards riders that put lots of miles on their equipment.

Reviewed 2/25/2019
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Flawless front shifting
by Paul
Competitive Racer
1 of 1 customers found this review helpful.

I bought the 46T36T version to replace a SRAM crankset and was immediately impressed by the improvement in front shifting. Everything else in my SRAM 10-speed drivetrain was unchanged, so the improved shifting can defiinitely be attributed to the Shimano chainrings (which have a reputation for being stiffer than SRAM)...Installation was easy. You'll need a Shimano bottom bracket, but those are cheap and sturdy with good weather-resistant bearing seals. Lastly, the Ultegra 8000 asethetics are mint clean lines, muted dark gray finish. I actually think this crankset looks nicer than its much pricier and only slightly lighter Dura Ace 9100 cousin.

Reviewed 11/20/2018
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Excellent cross and climbing.
by H. Dinh
Cycling Enthusiast

Pretty sweet crankset if you race cyclocross. This is my second crankset of this size, I put it on a road bike that I built for my coming tour that involves a lot of climbing. Shimano only made this teeth count combination for Ultegra, but the rest of the group is DuraAce. So far, it perform exceptionally, crisp gear switching and lightweight. The new version (R8000) is good looking too.

Reviewed 11/20/2017
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by Anonymous
Daily Commuter
1 of 1 customers found this review helpful.

Maybe a tiny bit less stiff than Dura Ace . But so solid, smooths and ready to go. Snappy in acceleration and spins for days. I am sure that if you are looking to find the difference between this and dura ace you will find it . but you have to really look for it.

Reviewed 10/12/2017
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Does the job well
by sfox
Cycling Enthusiast

I have always had great performance from Shimano produces and this is no exception.

Reviewed 7/8/2019
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Great price and quality!
by Donyh
Lanai ,HI

Wanted to upgrade my crankset on my Roubaix to a semi-compact. Felt the difference on my first ride out compared to the factory FSR crank it came with. The price was too good to pass!

Reviewed 12/31/2018
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