Shimano FC-R8100 Front Crankset Ultegra 52-36 172.5mm 12-Speed
SKU: 27357539985

Shimano FC-R8100 Front Crankset Ultegra 52-36 172.5mm 12-Speed

$238.48 $264.98
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Description

Shimano FC-R8100 Front Crankset Ultegra 52-36 172.5mm 12-SpeedULTEGRA's new FC R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options. Spanning 160 to 175 mm in length, ULTEGRA cranks now cater to smaller riders, triathletes, and cyclists curious about shorter crank arms. An integral part of Shimano's new 12 speed road lineup, the FC R8100 crank builds upon Shimano's legendary front

 

ULTEGRA's new FC-R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options. Spanning 160 to 175 mm in length, ULTEGRA cranks now cater to smaller riders, triathletes, and cyclists curious about shorter crank arms.

An integral part of Shimano's new 12-speed road lineup, the FC-R8100 crank builds upon Shimano's legendary front shifting and transmission efficiency. With new refinements for seamless 12-speed shifting, the ULTEGRA crank is now offered in lengths from 160 to 175 mm, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanical requirements.

FEATURES

Optimal balance of stiffness, strength, weight and rotational performanceHOLLOWGLIDE structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting
52-36, 50-34, and 46-36 chainring options. 160, 165, 170, 172.5, and 175 mm crank arm lengths.
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 27357539985

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4.5 ★★★★★
Based on 1774 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Chelsea, US
★★★★★ 5
Great for cats, get rid of lip lifter!
Color: Microbrush Kit
The best toothbrush for cats! It fits and is easy to maneuver, and because it’s small, my cat doesn’t mind the shape. The only thing is that the lip lifter hits teeth and gets caught in cheeks, so I sanded that off, which has made teeth brushing much easier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
A
Verified Purchase
Amazon Customer
Dallas, US
★★★★★ 4
Soft brush, good quality!
Color: Microbrush Kit
I like that the bristles on the brush are very soft and it's curved well for my kitty's mouth. The only thing that I don't care for is the handle is pretty long and doesn't need to be.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2025
S
Verified Purchase
S. P.
Bozeman, US
★★★★★ 5
Best best pet toothbrush I have tried
Color: Microbrush Kit
This is by far the best toothbrush I have found for my cat. It was clearly designed by someone who deeply understands feline dental health. The way the bristles decrease toward the tip and the specialized part for lifting the corner of the mouth are incredibly thoughtful and effective features. While the bristles are soft, they are strong enough to provide the necessary pressure against the teeth. My cat has a relatively small head and mouth, yet she resisted this brush the least of all. I will not be going back to my previous toothbrushes. Very highly recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
C
Verified Purchase
Crissi
Draper, US
★★★★★ 5
Cat approves, easy to use, comfortable to grip, sturdy.
Color: Microbrush Kit, Color: Microbrush Kit
My cat seems to love it so that's a automatic win! I was a little unsure about using a long handled toothbrush, I thought it would be more difficult to use but turns out its actually easier than the little finger brushes. The heads on the toothbrushes can be swapped, making it so that you dont have to buy a whole new one. It's been a few months since I bought it and its holding up well, no major wear on it aside from some gnaw marks from my Chonk chewing on it. Fits nicely in my hand and the brush head isn't too big for my cats tiny faces & teeth. I'd recommend it so far and I'm going to keep on with this brush instead of trying a new product every time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2025
M
Verified Purchase
Melissa Cordero
Whiting, US
★★★★★ 3
its packaged nice and it is a smaller product to fit in kitty mouths but still not great.
Color: Microbrush Kit
it's a nice product but still doesn't make my cats any easier to brush. Nor does it seem enjoyable. I enjoy brushing my teeth and I want them too also. I believe cats life would be so much longer if we brushed their teeth. Think about how early our ancestors died before proper dental care.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2025

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