Offering all the precision and functionality of the 12-Speed Shimano Dura-Ace power meter, the Ultegra FC-R8100-P power meter comes in a more affordable package. Scientific training requires accurate measurement and user-friendliness, and the new Ultegra R8100 power meter has both. Its dual-sided measurement is accurate within 1.5% and zero offset calibration is a quick and easy process. Perhaps most importantly, its long battery life, easy recharge, and ANT+ and Bluetooth®LE connectivity make using and recording your workouts easier than ever. Bluetooth LE and ANT+ Connectivity The Ultegra R8100 Power Meter brings everything a data-driven cyclist could want. Its integrated, waterproof design brings all-weather reliability while delivering accurate information including left/right balance. A rechargeable Li-ion battery is user-friendly and Bluetooth LE and ANT+ connectivity ensure easy setup. Hollowglide Chainring Technology Hollow technology on the outer chainring. The Hollowglide construction ensures high rigidity while its hollow structure cuts down on weight yet maintains strength. This provides better power transfer and quicker and more precise front shifting performance. Hollowtech II 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. The Best Balance of Stiffness, Strength and Weight The concept of Hollowtech II technology is focused on producing a superior crankset that will maximize a rider’s power transfer. The rigidity of the crankset ensures pedalling efficiency while its low weight, a key element of the crankset, 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. The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer.
This stunning model integrates your bottom bracket and chainset into one strong, robust and lightweight workhorse. Furthermore, it is compatible with all new XTR chainrings thanks to its integrated design which makes installation and adjusting easier than ever before. Its precision bottom bracket bearings are spaced further apart and are therefore more stable and longer lasting. What's most impressive, is its super-lightweight HollowTech II cold forged Dualumin crank arms deliver an excellent strength to weight ratio, so you can conquer every technical trail without any unnecessary weight holding you back. If your existing cranks are old or worn-out, this is an ideal choice of a replacement for getting back to fast and precise acceleration and shifting out on the trails. Please note: Bottom Bracket is not included Technologies: HollowTech: 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. HollowGlide: Hollow technology on the outer chainring. High rigidity hollow structure cuts down on weight yet maintains strength. Better power transfer and quicker and more precise front shifting.
Designed specifically with trekking in mind, the Shimano Alivio T4060 9 speed triple chainset is compatible with Hollowtech bottom brackets, which are durable and easy to find replacement parts for when required. Hollowtech bottom brackets come in sizes to fit most frames making this an extremely versatile chainset. Please Note: Bottom bracket is NOT included.
Perfect for pairing up with the rest of the Shimano 105 Di2 groupset, this 12 speed chainset comes kitted out with hollow aluminium crankarms for the best balance of durability, rigidity and low weight. Shimano has also put each crankarm through its anodising process for extra protection against wear and corrosion, making it ideal for enduring mile after mile of road, in all weather conditions. Another highlight is the resin ribs on the back of this model's chainrings, which use Shimano 105's unique structural design to achieve further weight savings and crisp shifting performance. Hollowtech II Technology Providing the best balance of stiffness, strength, weight and rotating performance, the concept of Hollowtech II technology is focused on producing a superior crankset that will maximise your power transfer. The rigidity of the crankset ensures pedalling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances where you need to pedal more. Moreover, the Hollowtech II crankset has a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods. Hollowglide Technology This model features Hollowglide technology on its outer chainring. High rigidity hollow structure cuts down on weight yet maintains strength. Better power transfer and quicker and more precise front shifting. Shimano 105 Di2 brings electronic wireless shifting to a new set of riders. For those who have only experienced mechanical shifting and ergonomics, Shimano 105 Di2 represents a transformation of the road cycling experience. Technologies: - 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. Manufacturer's Part Numbers: FCR7100A04 Black 12 Speed 165mm FCR7100C04 Black 12 Speed 170mm FCR7100D04 Black 12 Speed 172.5mm FCR7100E04 Black 12 Speed 175mm
Part of Shimano's revolutionary R7100 series, this 12 speed chainset is ready for wherever your next road journey takes you. Featuring a two-piece crank design that uses an integrated 24mm bottom bracket and 2x12 speed 50-34T chainrings, it is fully equipped for long days on the road. Another highlight is its four-arm construction and compatibility with modern disc brake road frames, making it easy to integrate into your setup for a performance upgrade. Technologies: - Affordable and high-end style crankset. - 4-arm crankset for 12 speed drivetrain. - Compatible with frames of O.L.D. 135mm and 410mm chainstay length. - 2-piece crankset. - Integrated crank arm and bottom bracket. - Increased rigidity with less weight. - Wider bearing positioning. - Rigidity is enhanced and pedalling force is efficiently transmitted. - Precision Bearings. - Low maintenance and simplified installation.
This Shimano 105 R7000 11 speed double chainset has been designed and refined to ensure maximum levels of power-transfer from rider to road are maintained. Thanks to modern technology, Shimano has designed this crankset with the perfect gear-pitch so it performs exceptionally with standard road frames (130mm rear dropout spacing) and modern disc brake frames, which have a wider 135mm dropout spacing and wider chainline. This design pushes the advancements of road chainset performance and achieves exceptional levels of efficiency and comfort.
This Shimano 105 R7000 11 speed compact chainset has been designed and refined to ensure maximum levels of power transfer from rider to the road are maintained. Thanks to modern technology, Shimano has designed this advanced road bike crankset with the perfect gear pitch so it performs exceptionally with standard road frames (130mm rear dropout spacing) and modern disc brake frames, which have a wider 135mm dropout spacing and a wider chainline. This design pushes the advancements in road chainset performance and achieves exceptional levels of efficiency and comfort. 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 disc brake-equipped bike frames. It is offered in 53-39, 52-36, and 50-34T chainring options and 160, 165, 170, 172.5, and 175mm crank arm lengths. Silky Black and Spark Silver colour options are available. Tech Info: On our options, the 165mm, 170mm, 172.5mm and 175mm numbers relate to the chainset's crank arm length in millimetres. Offering the perfect balance between power transfer, efficiency and comfort with the R7000 chainset while keeping it at a price that is ideal for riders on a budget; leaving more cash for mid-ride coffee breaks.
The Claris R2000 also benefits from trickle-down technology from Shimano's top-end models such as the 4-arm crank design. Efficient Power Transfer The 4-arm layout gives this chainset a modern look and increases the rigidity. It's also compatible with Shimano's "Hollowtech II" bottom bracket system, which consists of large external bearings on the bottom bracket and a large spindle attached to one crank arm. This system offers smoother performance and enhanced power transfer when compared to more basic internal bearing systems.
The Claris R2000 also benefits from trickle-down technology from Shimano's top-end models such as the 4-arm crank design. Efficient Power Transfer The 4-arm layout gives this chainset a modern look and increases the rigidity. It's also compatible with Shimano's "Hollowtech II" bottom bracket system, which consists of large external bearings on the bottom bracket and a large spindle attached to one crank arm. This system offers smoother performance and enhanced power transfer when compared to more basic internal bearing systems.
This Shimano CX50 chainset is the perfect choice for enthusiast riders. Designed for use with 2x10 speed drivetrains, the FC-CX50 provides cyclocross appropriate, 46-36T gearing. Technologies: - Alloy chainrings are both rigid and lightweight. - The chainring teeth have been developed to work in conjunction with the 10-speed directional HG road chains for increased contact to provide greater efficiency and improved power transfer. - Industry-leading cold forged crank arms have been evolved to increase rigidity, reduce weight and improve strength. - 2-piece cap-free design is quick and easy to install whilst being lighter and stiffer than a traditional crank/bottom bracket assembly. - Integrated bottom bracket seal design has a minimal bearing interface ensuring smooth rolling and increased durability.
This crankset features a tough aluminium crank arm material with a steel axle, making it ideal for handling the increased pressure from fitness riding and longer journeys. Its advanced chainrings ensure fast and responsive indexed shifting as you travel from the smooth city pavement to the countryside. One final highlight is this model's 2-piece crank design that offers increased rigidity and less weight. Item Top Features Continued: Chainline: 43.5mm Chain Ring Combination: 50/34T Compatible bottom bracket Type: Outboard threaded or pressfit Compatible Chain: HG 9-Speed Crank Arm Length: Multiple options available to select Gear Arms: 4 Chain Guard / Bash Guard: Sold separately BCD: 110/74mm Recommended Bottom Bracket: Pressfit: BB-RS500-PB; Threaded (Normal): BB-RS500 Q-Factor: 150mm Technologies: 2-Piece Crankset: Integrated crank arm and bottom bracket. Increased rigidity with less weight. Wider bearing positioning. Rigidity is enhanced and pedalling force is efficiently transmitted. Precision Bearings. Low maintenance and simplified installation. HG HyperGlide Compatible: The distinctively designed HYPERGLIDE sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. The HG cassette sprocket, which was developed for the MTB 10-speed system, underwent comprehensive optimisation to achieve super-highly efficient shifting. 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 maximise a rider’s power transfer. The rigidity of the crankset ensures pedalling 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.
This triple crankset features a robust alloy construction, which makes it perfect for stress-free urban commuting from A to B. Shimano has also equipped this version with its renowned Hyperglide sprockets that incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. This results in fast and responsive indexed shifting as you travel from the smooth city pavement to the countryside. Item Top Features Continued: Recommended BB Threaded (Normal): BB-UN26 Q-Factor: 171.5mm Number of Chainrings: 3 Chainring Type: SG-X Interchangeable with SHIMANO road front chainring 8/7-speed system Tooth Count: 50/39/30T Part Number: 170mm: FCA073C090; 165mm: FCA073A090 Technologies: Dual SIS Index: The SIS rear index shifting system was adopted at the front. With the index system at the front shifting operation is easier and more comfortable. HG HyperGlide: The distinctively designed HYPERGLIDE sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. The HG cassette sprocket, which was developed for the MTB 10-speed system, underwent comprehensive optimization to achieve super-highly efficient shifting.