CS-R8101 Ultegra Cassette
CS-R8101 Ultegra Cassette

CS-R8101 Ultegra Cassette

ICSR810112130

Regular price$117.99
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Earn Up To $1000 in Reward Cards

Get Carded For The Holidays

Now through December 24th, when you spend $250 or more in-store or online, you will receive a free rewards card to redeem on future purchases. Earn rewards while you shop and make this holiday season even sweeter! You can keep the card for yourself or give it to someone else—we won't judge.


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SPEND RECIEVE A:
$250 - $499 $25 Promo Card
$500 - $999 $75 Promo Card
$1000 - $2499 $150 Promo Card
$2500 - $4999 $400 Promo Card
$5000 - $7999 $600 Promo Card
$8000+ $1000 Promo Card

Promotion is valid on all qualifying purchases made between 11/16/24 and 12/24/24, and the value of the Rewards Card is dependent on the qualifying purchase threshold (excluding any applicable costs of packaging, shipping & handling, or taxes). Offer not valid on gift cards. No discount is applied at the time of sale. Rewards Cards WILL BE EMAILED ON 12/26/24 for qualifying online purchases and are valid only at mikesbikes.com from 12/26/24 - 2/28/25. For in-store purchases and pick-ups, physical cards will be issued at the time of sale. Get Carded offer is not retroactive, and lost or stolen Rewards Cards will not be replaced. Physical and digital Rewards Cards expire on 2/28/25.


Type
Size
  • Inventory on the way

California Region

  • San Rafael Available
  • Sausalito Available
  • Berkeley Available
  • Palo Alto 2-4 days 10-14 days
  • San Francisco Available
  • Sacramento Available
  • Los Gatos Available
  • Petaluma Available
  • Walnut Creek Available
  • San Jose Available
  • Pleasanton Available
  • Folsom 2-4 days 10-14 days
  • Roseville 2-4 days 10-14 days
  • Stanford Research Park 2-4 days 10-14 days
  • Distribution Center 2-4 days 10-14 days
  • Distribution Center 2-4 days 10-14 days

Colorado Region

  • Denver East 2-4 days 10-14 days
  • Denver Downtown Available
  • Highlands Ranch 2-4 days 10-14 days
  • Parker 2-4 days 10-14 days
  • Distribution Center 2-4 days 10-14 days

California Region

  • San Rafael 2-4 days 10-14 days
  • Sausalito 2-4 days 10-14 days
  • Berkeley 2-4 days 10-14 days
  • Palo Alto 2-4 days 10-14 days
  • San Francisco 2-4 days 10-14 days
  • Sacramento 2-4 days 10-14 days
  • Los Gatos 2-4 days 10-14 days
  • Petaluma 2-4 days 10-14 days
  • Walnut Creek 2-4 days 10-14 days
  • San Jose 2-4 days 10-14 days
  • Pleasanton Available
  • Folsom Available
  • Roseville 2-4 days 10-14 days
  • Stanford Research Park 2-4 days 10-14 days
  • Distribution Center 2-4 days 10-14 days
  • Distribution Center 2-4 days 10-14 days

Colorado Region

  • Denver East 2-4 days 10-14 days
  • Denver Downtown 2-4 days 10-14 days
  • Highlands Ranch Available
  • Parker 2-4 days 10-14 days
  • Distribution Center 2-4 days 10-14 days

Free shipping on all orders over $49. $9 shipping for orders under $49.

Cannondale, Santa Cruz, Cervelo, Gazelle, BMC, and *other bikes ship for FREE, but Gold Label Assembly will be added at checkout for only $79 (reg. $100) to cover the professional bike build and re-packaging by our certified technicians. It’s bike shop quality, direct to your door!

Some bikes not eligible for shipping due to manufacturer restrictions.

Shop with confidence! It's important to us that you are happy with your Mike’s Bikes purchase so we offer offer a 30-day return/exchange window for your unused gear and 14 days on all bikes. Our exchange and return process is fast and easy. If you choose to exchange for a different size or color, we will ship your product for free.

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The uninterrupted shifting experience of the Shimano Ultegra CS-R8101 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.

FEATURES:

  • 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

SPECS:

  • Cassette Body Type: Shimano/SRAM 11 Speed Road
  • Drivetrain Speeds: 12