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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
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For Your Every Summer RSVP, with Code: SUMMER15
Description
CS-R8101 Cassette 11-34 Ultegra 12-SpeedSHIMANO ULTEGRA Cassette CS R8101 12 12 speed 11 12 13 14 15 17 19 21 24 27 30 34T Item Number ICSR810112134 SKU Description Refined 12 step gear combination provides peak efficiency and accelerating performance for every racing situation Faster, smoother shifts under maximum pedaling force Compatible with new 12 speed and road 11 speed FREEHUB body Product Description HYPERGLIDE+ cassettes revolutionized off road shifting with its seamless shifts
SHIMANO ULTEGRA Cassette CS-R8101-12 12-speed 11-12-13-14-15-17-19-21-24-27-30-34T
Item Number ICSR810112134
SKU Description
- ・Refined 12 step gear combination provides peak efficiency and accelerating performance for every racing situation
- ・Faster, smoother shifts under maximum pedaling force
- ・Compatible with new 12-speed and road 11-speed FREEHUB body
Product Description
HYPERGLIDE+ cassettes revolutionized off-road shifting with its seamless shifts both up and down the gear range. Now it's time for the technology to change road cycling. Even during maximal efforts up a climb or racing a friend, riders no longer need to back off to perform a shift. In any gear, Shimano ULTEGRA R8150 drivetrains maximize efficiency thanks to larger cogs and retain compatibility with existing HYPERGLIDE FREEHUB bodies. All this while increasing to 12-gears, ULTEGRA CS-R8100 cassettes are the new paradigm in road shifting.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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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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4.0 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Classy and Stylish, Very comfortable.
Size: XX-Large, Color: Blue
Comfortable, Great Value, Quality feel. Love it!
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Comfortable & Dad-Bod Approved!
Size: X-Large, Color: White, Size: X-Large, Color: White
I purchased this shirt in advance of our 10th Anniversary Cruise, and I'll say it was a success! I had never worn a shirt like this before, but I am now a fan. Cool, breathable, comfortable, and my wife loved it! Definitely Dad-Bod Approved. Quality was nice and I think was priced fairly well (might have bought on a sale).
The size was perfect. I'm 6'2", 275lbs in these photos, and the XL was a great fit.
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Reviewed in the United States on December 4, 2024
★★★★★ 4
Not bad so far
Size: Small, Color: Light Yellow
mixed feelings about the quality... only worn/washed once and there are some dangling threads which I had to cut off which might lead to further degradation of longevity etc. The fit is a bit snug between S and M, I chose small regarding the closest fit to my chest size but it's ok. The fabric is thin so if you are a guy that doesn't mind showing off your form and fitness this shirt is flattering. The fabric is texture, light and thin so there is comfort regarding the lightness of wearing it. One could go a size larger for looser fit and more comfort but I actually like the tighter fit.
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Reviewed in the United States on June 9, 2025
★★★★★ 5
Perfect summer shirt...
Size: 3X-Large, Color: White
I am one that ALWAYS look at the 1 star reviews first. When I brought this shirt I did not... I brought 4 more in different colors. I have now looked at the 1 star reviews and I have to disagree.. Most say they are too thin. When it's 90 - 100 degrees outside this shirt is PERFECT.. It is airy and relaxing. I found it to be also perfect in size. I came back to order more but they don't have a few colors I am looking for. This worked for me all the way around..
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Reviewed in the United States on August 23, 2025
★★★★★ 5
Flattering and classy
Size: Medium, Color: White
Thin but I love it that way. Is not overly wrinkled after ironing but wrinkles terribly when washed. Fits well not tight or too loose. Buy your exact size. The white is very classy.
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Reviewed in the United States on February 15, 2025