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Load image into Gallery viewer, Shimano Ultegra FC-R8100 Crankset 175mm 12-Speed 50/34t Hollowtech II
Load image into Gallery viewer, Shimano Ultegra FC-R8100 Crankset 175mm 12-Speed 50/34t Hollowtech II

SKU: CKST2105

Shimano Ultegra FC-R8100 12-Speed Road Crankset 50/34t Hollowtech II, 175mm Length, Lightweight Hollowglide Design for Precision Shifting, High Stiffness & Power Transfer, Compatible with 130mm Hubs

Regular price $365.00
$405.95 Sale price $365.00 Regular price
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Description
Specifications

Upgrade your road cycling performance with the Shimano Ultegra FC-R8100 Crankset - a precision-engineered component designed for serious riders seeking seamless shifting, exceptional durability, and optimized power transfer. Crafted from advanced materials and featuring innovative technology, this 12-speed crankset sets a new standard for speed, efficiency, and style.

Materials & Engineering

Constructed with Shimano's Hollowglide structure, the FC-R8100 combines lightweight design with maximum strength. The hollow forged aluminum crank arms deliver a perfect balance of stiffness and weight reduction, enhancing your pedaling efficiency and responsiveness. The 175mm crank length provides an ideal fit for a wide range of cyclists, from competitive racers to dedicated enthusiasts, ensuring optimal biomechanical positioning.

Components & Technology

Equipped with Shimano's renowned Hollowtech II spindle interface, this crankset boasts superior durability and easy installation. The 50/34T chainrings feature Shimano's asymmetric BCD (110mm), optimizing gear shifting precision and chainring durability. With a 44.5mm chainline, it offers compatibility with 130mm hubs, delivering smooth power transfer and refined handling.

Performance & Innovation

Designed specifically for 12-speed road drivetrains, the FC-R8100 ensures lightning-fast, precise front shifting thanks to Shimano's latest refinements. The lightweight hollow structure reduces rotational mass, resulting in quicker accelerations and better overall agility. The 148mm Q-factor enhances rider comfort and alignment, improving pedaling efficiency on long rides or intense efforts.

Style & Use Case

Featuring a sleek black finish, the Shimano Ultegra FC-R8100 crankset complements any road bike aesthetic, from classic to modern. Its versatile 50/34t compact setup is ideal for climbing, endurance events, and fast-paced group rides. Whether you're a competitive racer, triathlete, or passionate enthusiast, this crankset offers the performance and reliability needed to elevate your cycling experience.

Key Features:

- Materials: Lightweight aluminum with Hollowglide construction for strength and reduced weight

- Performance: Seamless 12-speed shifting, optimized for precise front derailleur operation

- Components: Shimano Hollowtech II spindle, asymmetric 110mm chainring bolt circle diameter (BCD)

- Design & Compatibility: 175mm crank length, 44.5mm chainline, 130mm hub compatibility, black finish

- Use Case: Road cycling, endurance racing, triathlon, competitive riding

Upgrade to the Shimano Ultegra FC-R8100 Crankset and experience cutting-edge technology, superior craftsmanship, and unmatched performance on every ride. Dominate the climbs, accelerate with confidence, and enjoy the seamless shifting that only Shimano Ultegra delivers.

  • Lightweight Hollowtech II construction combines high strength and low weight for optimal power transfer and efficient riding performance.
  • Features 50/34T chainrings crafted from durable aluminum with Shimano's proven Hyperglide tooth design for smooth, rapid gear shifts across all 12 speeds.
  • Advanced engineering delivers a 44.5mm chainline and 148mm Q-factor, providing a balanced stance ideal for road racing, triathlons, and riders with specific biomechanical needs.
  • Designed with a sleek black finish, this crankset enhances both style and aerodynamics, perfect for upgrading your road bike for competitive performance or endurance riding.
  • Incorporates Shimano's innovative Hollowglide technology, reducing weight while maintaining maximum stiffness and strength for superior power transfer, quick response, and consistent shifting under load.
ColorBlack
Rings50/34
Number of ChainringsDouble
Crank Length (mm)175
Crank Intended UseRoad
Drivetrain Speeds12
BB IncludedNo
Pedal Spindle9/16"
Spindle Interface TypeShimano Hollowtech II
Chainring BCD110 Shimano Asymmetric
Chainline/Hub Compatibility130 Hubs
Defined ColorBlack
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365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

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Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

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Ben Berman Founder & CEO of 365 Cycles


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