Introducing the latest evolution in cycling technology: the ULTEGRA FC-R8100 crank. Building upon Shimano's legacy of excellence in front shifting precision and power transmission efficiency, this crankset introduces a range of enhancements to elevate your riding experience to new heights.

At the core of its design philosophy lies the pursuit of optimal performance in every aspect. The FC-R8100 achieves the perfect balance of stiffness, strength, weight, and rotational performance, ensuring that every pedal stroke translates into maximum propulsion.

One of the standout features of the FC-R8100 is its innovative HOLLOWGLIDE structure. By utilizing advanced materials and engineering techniques, Shimano has succeeded in creating a crankset that is both lightweight and incredibly robust. This not only reduces overall weight for improved climbing and acceleration but also maintains exceptional strength for flawless power transfer and lightning-fast, precise front shifting.

The FC-R8100 offers riders unprecedented flexibility in customization. Choose from a variety of chainring options, including 52-36, 50-34, and 46-36 configurations, to fine-tune your gearing for any terrain or riding style. But perhaps the most exciting aspect of the FC-R8100 is the expanded range of crank arm lengths now available.

Spanning from 160 to 175 millimeters, these crank arm length options cater to a broader spectrum of cyclists than ever before. Whether you're a smaller rider seeking a more ergonomic fit, a triathlete striving for maximum aerodynamic efficiency, or someone with specific biomechanical requirements, the FC-R8100 has the perfect crank length to optimize your performance and comfort.

As an integral part of Shimano's groundbreaking 12-speed road lineup, the FC-R8100 crankset represents the pinnacle of cycling innovation. Experience the future of riding with a component that not only meets but exceeds the demands of modern cyclists, pushing the boundaries of performance, versatility, and rider satisfaction.

 

FEATURES

  • Optimized Performance: Achieve an ideal balance of stiffness, strength, weight, and rotational performance for enhanced riding efficiency.
  • HOLLOWGLIDE Structure: Lightweight yet robust construction ensures excellent power transfer and precise front shifting.
  • Chainring Options: Choose from 52-36, 50-34, and 46-36 chainring configurations to tailor your gearing to different terrains and riding styles.
  • Expanded Crank Arm Lengths: Available in lengths from 160 to 175 mm, catering to a wider range of riders for improved fit and comfort.
  • Compatibility: Seamlessly integrates with Shimano's 12-speed road lineup, ensuring smooth operation and efficient power transfer.
  • Sleek Design: Modern aesthetic adds a touch of sophistication to your bike's appearance on the road or at rest.

 

TECHNOLOGIES

HOLLOWGLIDE

Hollow technology on outer chainring
High rigidity hollow structure cuts down on weight yet maintains strength. Better power transfer and quicker and more precise front shifting

HOLLOWTECH Crank Arm

Hollow forged crank arms
A lightweight crankset not only reduces the bike’s weight, but decreases rotating mass to aid in acceleration.
The challenge is to reduce the weight of the crank without reducing its strength and rigidity.
SHIMANO’s advanced forging technology has solved the problem through the HOLLOWTECH crank.
Just like high quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very lightweight.

HOLLOWTECH II

Providing the best balance of stiffness, strength, weight and rotating performance
The concept of HOLLOWTECH II technology is focused on producing a superior crankset which will maximize a rider’s power transfer. The rigidity of the crankset ensures pedaling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. Naturally, SHIMANO strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. HOLLOWTECH technology is an ultra-lightweight hollow crankarm created by SHIMANO with the company’s own proprietary forging technology that also maintains rigidity. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer.
The HOLLOWTECH II crankset has been developed by pursuing the optimum balance of stiffness & rotating performance in a lightweight and beautiful crankset design.
High Precision Sealing
Moreover, HOLLOWTECH II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.

 

SPECIFICATIONS

MODEL NO FC-R8100
SERIES ULTEGRA R8100 Series
Colour Series color
Average weight 700g (50-34T), 711g (52-36T)
Rear speeds 12
Compatible chain HG 12-speed
Chain line (mm) 44.5
P.C.D. (mm) 110
Spider/gear arms 4
Chainring combination 46-36T (NEW), 50-34T, 52-36T
Q-factor (mm) 148
Crank arm length (mm) | 160
Crank arm length (mm) | 165
Crank arm length (mm) | 170
Crank arm length (mm) | 172.5
Crank arm length (mm) | 175
Optional chain guard | Without chain/bash guard
HOLLOWTECH II
HOLLOWTECH crank arm
HOLLOWGLIDE
Compatible bottom bracket type | Outboard
Recommended bottom bracket | Threaded (normal) SM-BBR60
Recommended bottom bracket | Press-Fit SM-BB72-41B
Threaded bottom bracket shell width (mm) | 68
Threaded bottom bracket shell width (mm) | 70
Crank fixing screw included

(IFCR8100_)

FEATURES

  • Optimal Performance Balance: The ULTEGRA FC-R8100 crank achieves an ideal equilibrium of stiffness, strength, weight, and rotational efficiency. This meticulous design ensures every pedal stroke delivers maximum power to the drivetrain, enhancing overall performance on the road.
  • HOLLOWGLIDE Structure: Incorporating Shimano's advanced HOLLOWGLIDE technology, the crankset features a hollow construction that reduces weight without compromising durability. This innovative design maintains exceptional strength, providing riders with confidence-inspiring reliability and long-term performance.
  • Precise Front Shifting: Engineered for seamless front shifting, the FC-R8100 crankset delivers lightning-fast gear changes with pinpoint accuracy. Riders can effortlessly transition between chainrings, experiencing smooth and responsive shifting even under demanding conditions.
  • Versatile Chainring Options: Choose from a range of chainring configurations to customize your gearing according to your riding preferences and terrain. Whether you prefer the versatility of a 52-36 setup, the compactness of a 50-34, or the efficiency of a 46-36, the FC-R8100 offers options to suit every rider's needs.
  • Expanded Crank Arm Lengths: With crank arm lengths spanning from 160 to 175 millimeters, the FC-R8100 accommodates a diverse range of rider heights and biomechanical requirements. This expanded selection ensures that cyclists of all sizes can find the perfect fit for optimal comfort and performance.
  • Compatibility: Designed as a key component of Shimano's 12-speed road lineup, the FC-R8100 crankset seamlessly integrates with other Shimano drivetrain components. This compatibility ensures smooth operation and efficient power transfer, allowing riders to experience the full benefits of Shimano's cutting-edge technology.
  • Enhanced Aesthetics: Beyond its exceptional performance characteristics, the FC-R8100 crankset boasts a sleek and modern aesthetic that complements any road bike. Its refined appearance adds a touch of sophistication to your bike's overall design, enhancing its visual appeal on the road or at rest.

 

TECHNOLOGIES

HOLLOWGLIDE

Hollow technology on outer chainring
High rigidity hollow structure cuts down on weight yet maintains strength. Better power transfer and quicker and more precise front shifting

HOLLOWTECH Crank Arm

Hollow forged crank arms
A lightweight crankset not only reduces the bike’s weight, but decreases rotating mass to aid in acceleration.
The challenge is to reduce the weight of the crank without reducing its strength and rigidity.
SHIMANO’s advanced forging technology has solved the problem through the HOLLOWTECH crank.
Just like high quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very lightweight.

HOLLOWTECH II

Providing the best balance of stiffness, strength, weight and rotating performance
The concept of HOLLOWTECH II technology is focused on producing a superior crankset which will maximize a rider’s power transfer. The rigidity of the crankset ensures pedaling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. Naturally, SHIMANO strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. HOLLOWTECH technology is an ultra-lightweight hollow crankarm created by SHIMANO with the company’s own proprietary forging technology that also maintains rigidity. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer.
The HOLLOWTECH II crankset has been developed by pursuing the optimum balance of stiffness & rotating performance in a lightweight and beautiful crankset design.
High Precision Sealing
Moreover, HOLLOWTECH II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.

MODEL NO FC-R8100
SERIES ULTEGRA R8100 Series
Colour Series color
Average weight 700g (50-34T), 711g (52-36T)
Rear speeds 12
Compatible chain HG 12-speed
Chain line (mm) 44.5
P.C.D. (mm) 110
Spider/gear arms 4
Chainring combination 46-36T (NEW), 50-34T, 52-36T
Q-factor (mm) 148
Crank arm length (mm) | 160
Crank arm length (mm) | 165
Crank arm length (mm) | 170
Crank arm length (mm) | 172.5
Crank arm length (mm) | 175
Optional chain guard | Without chain/bash guard
HOLLOWTECH II
HOLLOWTECH crank arm
HOLLOWGLIDE
Compatible bottom bracket type | Outboard
Recommended bottom bracket | Threaded (normal) SM-BBR60
Recommended bottom bracket | Press-Fit SM-BB72-41B
Threaded bottom bracket shell width (mm) | 68
Threaded bottom bracket shell width (mm) | 70
Crank fixing screw included
SKU IFCR8100_
Brand Shimano

Be The First To Review This Product!

Help other PDL Bike users shop smarter by writing reviews for products you have purchased.

Write a product review