Shimano R8101 Ultegra Cassette 12-Speed 11-34T by SHIMANO - Used condition

Shimano R8101 Ultegra Cassette 12-Speed 11-34T — Open-Box, 23% Off

Name: Shimano R8101 Ultegra Cassette 12-Speed 11-34T
Brand: SHIMANO
SKU: awhd-us-b0dfk4c2rv
Price: 117.31 USD
Availability: InStock

Brand: SHIMANO

Condition: Used - Mint

$117³¹

$152⁵⁰

-23% Save $35¹⁹

Updated: 2 days ago

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Description

High-precision 12-speed CS-R8101 cassette crafted from durable steel ensures long-lasting performance and reliable shifting on every ride.

Advanced HYPERGLIDE+ technology delivers seamless, fast, and precise gear changes under high torque, enhancing acceleration and climbing efficiency.

Compatible with both 12-speed and 11-speed freehub bodies, offering versatile upgrade options for road cyclists seeking smooth, uninterrupted gear transitions.

Designed with larger drive cogs for maximum drivetrain efficiency, this cassette optimizes power transfer, improves responsiveness, and reduces drivetrain wear.

Sleek silver finish complements any road bike aesthetic, while the 11-34t ratio offers an excellent balance of climbing ability and top-end speed for versatile riding conditions.

Upgrade your cycling performance with the CS-R8101 12-Speed Cassette - 11-34t, Silver - the ultimate choice for serious road cyclists and racers seeking precision, durability, and seamless shifting. Engineered with advanced materials and innovative technology, this cassette enhances your bike's drivetrain efficiency and provides smooth, reliable gear transitions under all riding conditions. ### Materials & Construction Constructed from high-strength, lightweight steel with nickel-plated cogs, the CS-R8101 cassette offers exceptional durability and corrosion resistance. Its robust build ensures long-lasting performance, even during intense training and competitive racing. The silver finish not only adds a sleek aesthetic but also aids in heat dissipation, maintaining optimal performance over countless rides. ### Performance & Engineering Designed to optimize power transfer and drivetrain efficiency, the 12-speed cassette features a carefully refined gear step pattern from 11t to 34t. This range provides optimal gear ratios for climbing steep hills, sprinting on flats, and cruising at high speeds. Larger driving cogs improve energy efficiency and compatibility with 's latest freehub bodies, while the innovative design minimizes weight without sacrificing strength, enabling faster acceleration and smoother pedaling. ### Components & Technology Incorporating HYPERGLIDE+ technology, the CS-R8101 ensures lightning-fast, precise gear shifts with minimal effort - even under maximum pedaling load. The wide gear spacing combined with the Hyperglide+ design delivers seamless, rapid transitions up and down the cassette, reducing chain skip and enhancing overall riding comfort. Compatibility with both 12-speed and 11-speed freehub bodies makes this cassette versatile for a range of high-performance road bikes. ### Style & Use Case Featuring a sleek silver finish, the CS-R8101 is perfect for competiti

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Product Details

SKU:: awhd-us-b0dfk4c2rv
Model:: ICSR810112134
Country:: US
ASIN:: B0DFK4C2RV
GTIN:: 00192790849881
UPC:: 192790849881

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $35 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

Why use OpenBoxFox?

Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for SHIMANO products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.

Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.