SKU: 94152212991

Shimano Ultegra R8100 52/36t 12-Speed 4-Bolt 110BCD Bike Chainring Set 164g

$94.05 $104.50
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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3

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Description

Shimano Ultegra R8100 52/36t 12-Speed 4-Bolt 110BCD Bike Chainring Set 164gBrand Model: Shimano Ultegra R8100 Chain Compatibility: 12 Speed Weight: 164 grams Tooth Count: 52 36t BCD Compatibility: 110 mm Mount Type: 4 Bolt Condition: Typical wear on the chainring teeth from prior use. Some heavier scratches are present on the small chainring. Also, please reference the listing photos to evaluate the current wear and condition of the item. At CyclingUpgrades, we fulfill all orders next business day or sooner. Generally we are

Brand/Model: Shimano Ultegra R8100

Chain Compatibility: 12 Speed

Weight: 164 grams

Tooth Count: 52/36t

BCD Compatibility: 110 mm

Mount Type: 4-Bolt

Condition: Typical wear on the chainring teeth from prior use. Some heavier scratches are present on the small chainring.

Also, please reference the listing photos to evaluate the current wear and condition of the item.

At CyclingUpgrades, we fulfill all orders next business day or sooner. Generally we are able to fulfill orders placed by 12pm MT on the same day, however it is not guaranteed. We ship all items via USPS except for frames/wheels which ship via UPS or Fedex. Please check our other listings for additional cycling upgrades and thank you for shopping our store!

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 94152212991

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4.6 ★★★★★
Based on 19 reviews
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Product Reviews
A
Verified Purchase
Ashleigh
Natrona Heights, US
★★★★★ 5
Buy this one!
Size: 65 Inch, Color: Light Grey
This was a great buy! I looked through many many different options before buying and this one was the one I chose. Definitely a good choice. It keeps its shape and is cool to the touch which is amazing for a hot sleeper. It helps so much with my sore hips being 7 months pregnant. Fits great on my queen size bed with room still got my partner to sleep comfortably as well. Definitely recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
M
Verified Purchase
Michele strauss
Grantham, US
★★★★★ 5
Great pregnancy pillow!!
Size: 57 Inch, Color: Light Grey
I LOVE this pillow. It arrived quickly and was packaged very well. It was pretty squished when it arrived, but fluffed up very quickly! I didn't notice any odor when I unpackaged it. Love that the cover can just zip off for easy cleaning. It's helped a ton with my hip pain this pregnancy. It stays pretty cool, especially when compared to my normal pillow. First night I had it was the best sleep I've had in a long time and I look forward to laying down with it. Only bummer is it takes up quite a lot of room on the bed. I don't mind, but I do feel bad for my husband who I share with lol.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
A
Verified Purchase
Amanda S
Natrona Heights, US
★★★★★ 4
good
This pregnancy pillow feels really comfortable and provides good support while sleeping. It is a bit bulky, so sometimes I switch back to my regular pillow, but overall, it still feels really good and helps me get more comfortable at night.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
I
Verified Purchase
It’s All AOK
San Leandro, US
★★★★★ 5
10 out of 10
Size: 57 Inch, Color: Light Grey
10 out of 10. Just got this in and I am finally sleeping at night. So soft, instant lower back relief, and fits well even on the couch.
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Reviewed in the United States on May 5, 2026
J
Verified Purchase
jelly
Natrona Heights, US
★★★★★ 3
Too firm throughout, but no support
Size: 57 Inch, Color: Light Yellow
I like the feel of the fabric but it's honestly not comfortable for me. The stuffing makes the pillow way too firm and I wake up with sore neck muscles. I do appreciate the body length, (I am 5'3) and it's comfortable for a little while, but not for the whole night. Especially because I have to get up multiple times to use the bathroom, and this pillow just gets in the way. I decided to just use three different pillows for my head, my legs and my arms/back at all different firmness so I get the support I need. If you are able to deal with the firmness of the pillow throughout, this might be a good option for you. I also ordered the cooling option and this does not help keep me cool at night. Even with the AC on and the fan running. It sleeps hot. I ended up storing it back in its vacuumed sealed bag and put it away.
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Reviewed in the United States on August 19, 2025

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