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Ships within 48 hours · Estimated delivery Sep 18 - Sep 23
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Description
Shimano Ultegra CS-R8101 Cassette - 12-Speed, 11-30t, SilverThe uninterrupted shifting experience of the Shimano Ultegra CS R8100 12 speed cassette range lets you climb, sprint, or cruise without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12 speed freehub bodies. Shimano HYPERGLIDE+ technology is integrated to provide seamless shifts both up and down the gear range. Refined 12 step gear combination provides
The uninterrupted shifting experience of the Shimano Ultegra CS-R8100 12-speed cassette range lets you climb, sprint, or cruise without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12-speed freehub bodies. Shimano HYPERGLIDE+ technology is integrated to provide seamless shifts both up and down the gear range.- Refined 12 step gear combination provides peak efficiency and accelerating performance for every racing situation
- Faster, smoother shifts under maximum pedaling force
- Compatible with 12-speed and road 11-speed freehub body
Product Specifics
- Range: 11-30
- Cogs: 11-12-13-14-15-16-17-19-21-24-27-30
- Cassette Body Type: Shimano HG 11/12-Speed Road
- Drivetrain Speeds: 12
- Color: Silver
- Weight: 291
- Defined Color: Silver
Today's Stock Status
10+ Available to ship in 2-4 Business Days
UPC: 192790849898
EAN: Not available
Manufacturer Part Number: Does Not Apply
FW0318
181680-Q0-L
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
- 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
4.4 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Nicer than I thought they’d be!
Color: White - Set 23, Size: X-Large
Love these!!! I bought a size larger than I usually do and they fit great, so they might run small, dunno for sure. They are comfortable, don’t slide down, and are soft. The spandex is nice, so they are stretchy and wash better than 100% cotton. Oh, and no saggy bottom!
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Perfect panties
Color: Beige - Set 17, Size: XX-Large
Great fit. Very comfortable, real coverage, Cotton/stretch material gives a a nice shape and launders beautifully! Multiple purchases!
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Comfortable cotton briefs
Color: Beige - Set 17, Size: Large
Very pleased with this underwear. Purchased a second pack of four. Fits well, very comfortable and gets softer after washing. Comfortable stretch in the waistband without being too tight. I have had several abdominal surgeries in my life, and my belly will never be flat. I am also elderly and appreciate the fabric being cotton.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Great quality for the price!
Color: Beige - Set 17, Size: Large
Exceptional quality that lasts through many washings and dryings.
Fit is apot on and comfortable.
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Reviewed in the United States on May 19, 2026
★★★★★ 4
W knows how to fit us biggies
Color: Black - Set 3, Size: 7X-Large
wirarpa is the only company that makes honest to goodness full coverage briefs...I have the boy short biker length ones and now these......They have a wonderful wide top of panty , no digging in because it's wide, always comfy
Wirarpa knows that women who are large/ fat etc have bellies and these are as close as you will get to feeling like you wearing nice panties .....no dig into crotch where panties meet thigh......
no more hurt skin from sitting down , these don't dig in
Pricey but I have wasted lots of money before searching. so I buy enough and have a good supply, you never know when prices will keep climbing Soft, no seams, wash in washer & hang on line/hangers to dry, never put in dryer
Biker length ones I wear around the house when alone ................
Only complaint: not all styles in my 5X size, you miss out on other styles but these two : panties and long boxer are my staples....... a company that KNOWS how to make decent big woman undies should offer all styles
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Reviewed in the United States on January 30, 2026