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ULTEGRA's FC-R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options. Spanning 160 to 175 mm in length, ULTEGRA cranks now cater to smaller riders, triathletes, and cyclists curious about shorter crank arms. An integral part of Shimano's 12-speed road lineup, the FC-R8100 crank builds upon Shimano's legendary front shifting and transmission efficiency. With refinements for seamless 12-speed shifting, the ULTEGRA crank is now offered in lengths from 160 to 175 mm, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanical requirements. FEATURES Optimal balance of stiffness, strength, weight and rotational performance HOLLOWGLIDE structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting TECHNOLOGIES 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. 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. 24 mm Diameter Axle And Bearings Why choose the 24 mm axle and bearings for the HOLLOWTECH II crankset? The diameter of the Bottom Bracket axle and bearings was of primary importance for the development because the Bottom Bracket axle area is tied to such key elements as stiffness, strength, weight and rotating performance. What’s important is the total balance of crankset In addition, taking the crankset as a whole, the total balance of crankarm rigidity, axle stiffness, bearing position and others is essential. Indeed, the crankset is designed by careful consideration of the total balance of those elements to prevent breakage. Outboard Bearing For most frames with 68 mm Bottom Bracket shells, HOLLOWTECH II with 24 mm axle can set the bearing position outside of the frame to provide better weight distribution and more stability. Chain Gearing: 12 Material: Aluminium Number of teeth: 34;50T Q-factor: 148.0 Axle Standard: Hollowtech II Length (mm): 170.0 Type of Product: Cranks Made in: Malaysia Weight (g): 700.0 Designed for Number of Chainring: 2 Mounting System: Asymmetric;110 BCD
Product Shimano Ultegra Crankset FC-R8100 170.0 34T-50T Crankset is marked by the EAN code 4550170894108.
Material | Aluminium |
Category | Bicycles, Components |
EAN | 4550170894108 |
ULTEGRA's FC-R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options. Spanning 160 to 175 mm in length, ULTEGRA cranks now cater to smaller riders, triathletes, and cyclists
ULTEGRA's FC-R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options. Spanning 160 to 175 mm in length, ULTEGRA cranks now cater to smaller riders, triathletes, and cyclists
ULTEGRA's FC-R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options. Spanning 160 to 175 mm in length, ULTEGRA cranks now cater to smaller riders, triathletes, and cyclists
ULTEGRA's FC-R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options. Spanning 160 to 175 mm in length, ULTEGRA cranks now cater to smaller riders, triathletes, and cyclists
The SHIMANO ULTEGRA R8000 series crank features lightweight crankarms, a hollow outer chainring, and a wider gear pitch for increased clearance on modern road frames. I Lightweight crankarm design optimized for power-transfer efficiencyMinimal weight without sacrificing stiffnessHOLLOWTECH
ULTEGRA R8000 cranks help you transform energy into speed. With significant weight reduction and optimized shape for more efficient power transmission. It provides a wide range of gear combinations to suit your needs. A beautifully shaped crank with a massive design is a masterpiece of this
DURA-ACE FC-R9200 crank, the heart of the bicycle, ensures that no portion of your pedal stroke is wasted. With hollow arms and chainrings, weight is kept to a minimum but stiffness and shifting precision is maximized.The DURA-ACE FC-R9200 crank performs two vital functions: transferring your
Clean and stylish appearanceCascaded design image taken from high-end modelsHigh-end 4-arm FC designCompatible chain: HG 8-speedRecommended BB_Pressfit: BB-RS500-PB | Number of teeth: 34;50T | Designed for Number of Chainring: 2 | Length (mm): 175.0 | Axle Standard: Hollowtech II | Type of Product:
Clean and stylish appearanceCascaded design image taken from high-end modelsHigh-end 5-arm FC designCompatible chain: HG 8-speedRecommended BB_Pressfit: BB-RS500-PB | Number of teeth: 50T;34 | Made in: Malaysia | Chain Gearing: 8 | Mounting System: 110 BCD | Designed for Number of Chainring: 2 | Type of
Clean and stylish appearance | Cascaded design image taken from high-end models | High-end 4-arm FC design | Compatible chain: HG 9-speed | Recommended BB_Pressfit: BB-RS500-PB | Chain Gearing: 9 | Axle Standard: Hollowtech II | Material: Aluminium | Number of teeth: 34;50T | Q-factor: 150.0 | Type of Product:
HOLLOWTECH II Crankset with 11-speed. Feature balances weight and efficiency without sacrificing stiffness. Rider Tuned performance with numerous gear combinations. Wider gear pitch increases chain clearance with small gearings and allows for 410 mm chain stays on 135 mm O.L.D. | Benefit: Optimum
The Shimano Tourney FC-TY501 Crankset is a versatile and reliable component designed to enhance the performance of your bicycle. Whether you're a casual rider, commuter, or entry-level mountain biker, this crankset is engineered to meet your needs.Versatile GearingThe 2x7/8-speed configuration
The SHIMANO ULTEGRA R8000 series crank features lightweight crankarms, a hollow outer chainring, and a wider gear pitch for increased clearance on modern road frames. I Lightweight crankarm design optimized for power-transfer efficiencyMinimal weight without sacrificing stiffnessHOLLOWTECH
Compatible with a 3 x 8, 3 x 7, and 3 x 6 speed drivetrains, the SHIMANO crank delivers reliable, precise DUAL SIS shifting. | | Precision indexed shifting | Quick and precise assembly | For BBUN26 123 mm | | Number of teeth: 24T;42T;34 | Made in: Philippines | Designed for Number of Chainring: 3 | Length (mm):
Using the strongest HOLLOWTECH II construction, the SHIMANO SAINT FC-M820 features a steel axle and steel pedal inserts. The SHIMANO SAINT crank is the standard in gravity riding. Strongest HOLLOWTECH IIStrongest steel axle in our line-upSteel pedal insertLighter 4 arm Variety of specFC-M820 68 /
Front chainring type: DoubleChainring 50T-MS (for 50-34T)COMPATIBLE MODEL: FC-R8000COMPATIBLE SERIES: ULTEGRA R8000 Series | Made in: Japan | Length (mm): 1.0 | Mounting System: Asymmetric;110 BCD | Chain Gearing: 11 | Type of Product: Chainring | Number of teeth: 50T | Designed for Number of Chainring: 2
Front chainring type: DoubleChainring 50T-MA (for 50-34T)COMPATIBLE MODEL: FC-9000COMPATIBLE SERIES: DURA-ACE 9000 Series | Mounting System: Asymmetric;110 BCD | Chain Gearing: 11 | Designed for Number of Chainring: 2 | Made in: Japan | Number of teeth: 50T | Type of Product: Chainring | Length (mm): 1.0
Front chainring type: Double | Chainring 50T-MA (for 50-34T) | COMPATIBLE MODEL: FC-6800 | COMPATIBLE SERIES: ULTEGRA 6800 Series | Mounting System: Asymmetric;110 BCD | Designed for Number of Chainring: 2 | Type of Product: Chainring | Chain Gearing: 11 | Made in: Japan | Number of teeth: 50T
The SHIMANO DEORE XT FC-M8100-1 crank features an entirely new construction, using direct mount chainrings, special gear tooth profile for improved chain retention, and a 172 mm Q-factor. | | Superior chain retention | Special MTB gear teeth profile improves chain engagement and retention | DYNAMIC
The SHIMANO DEORE XT FC-M8100-1 crank features an entirely new construction, using direct mount chainrings, special gear tooth profile for improved chain retention, and a 172 mm Q-factor. | | Superior chain retention | Special MTB gear teeth profile improves chain engagement and retention | DYNAMIC
The redesigned SHIMANO 105 FC-R7000 crank balances weight and efficiency without sacrificing stiffness. Its wider gear pitch increases clearance with small gearings on modern 135 mm O.L.D. frames. | | Optimum power transfer | Balances weight and efficiency without sacrificing stiffness | Multiple
The SHIMANO TIAGRA FC-4700 crank balances weight and efficiency without sacrificing stiffness. It is offered in 52-36, 50-34T. | | | Optimum power transfer motivates riders to pedal further and faster | Optimal balance between stiffness and lightweight | Reinforced 4-arm construction | 110 PCD | Optimized
The SHIMANO TIAGRA FC-4700 crank balances weight and efficiency without sacrificing stiffness. It is offered in 52-36T chainring options. | | Optimum power transfer motivates riders to pedal further and faster | Optimal balance between stiffness and lightweight | Optimized gear shape for HG-X
The SHIMANO TIAGRA FC-4700 crank balances weight and efficiency without sacrificing stiffness. It is offered in 48-34T chainring options. | | Optimum power transfer motivates riders to pedal further and faster | Optimal balance between stiffness and lightweight | Optimized gear shape for HG-X