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Shimano RD-R8150 Ultegra Di2 12-Speed Rear Derailleur
  • £299.99
  • RRP £379.99
  • Saving you £21

Now simplified with a single derailleur cage length, the new 12-speed Shimano Ultegra R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option. With our fastest, most accurate shifting, the new 12-speed Ultegra R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28-34T low sprockets.Ultegra Shadow design with Di2 technology, shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gearThe rear derailleur is now the brains of the system with wireless connectivity to the shifters. It acts as the point the system is charged, provides ANT+ connection to 3rd party devises and replaces the handlebar junctionButton on the derailleur for Di2 operations, and LED light denotes synchronized shift mode, setting mode and charge requirementsSleek appearance with low profile Shadow design construction reduces risk of damage in a crashProgrammed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shiftThe removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shiftsDerailleur contains a saver (fuse) function, where the inner structure is protected from strong impactsHigh tolerance cold forged aluminium link plates and body construction is extremely light and durableFour self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting12-speed E-tube Di2 compatibleWide gear ratio compatible up to 11-34T

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Shimano Ultegra R8100 12 Speed Chainset Chainsets
  • £299.99

Shimano's Ultegra 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 new 12-Speed road lineup, the FC-R8100 crank builds upon Shimano's legendary front shifting and transmission efficiency. With new 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. 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. Optimised 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.

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Shimano Ultegra R8150 Di2 12 Speed Shifter Set Brake Levers
  • £299.99
  • RRP £399.99
  • Saving you £25

Among the greatest performing Dual Control Levers on the market, Ultegra R8150 Di2 offers 12-speed shifting with refined ergonomics and is exceptionally lightweight. Ultegra R8150 Di2 Dual Control Levers are the ultimate in reliable performance thanks to a Di2 electronic wired gear connection and lightweight rim brakes. Refined ergonomics and advanced materials show the racing pedigree of these levers. Shimano E-Tube E-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application. Shimano DCL Dual Control Lever DCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation. Ergonomic innovation is as critical to higher standard performance as the added gearing. The shift internals borrows the robustness from Shimano's MTB technology and is so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration and simply has to be experienced to be understood. SLR-EV Caliper Compatible SLR-EV is Shimano's SLR braking technology with a dual symmetric pivot brake caliper. The short-arm brake design employs two bearings and a roller to realize greater efficiency in the pivot area and deliver superior modulation and power for braking. Together with the BC-9000 brake cable, the latest calipers deliver 36% more braking power than Shimano's previous brake model.

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Shimano Ultegra R8150 Di2 12 Speed Shifter Set - Black - Pair}, Black
  • £299.99
  • RRP £399.99
  • Saving you £25

Shimano Ultegra R8150 Di2 12 Speed Shifter SetThe Ultegra R8150 Di2 12 Speed Shifter Set from Shimano is a pair of dual control brake/shift levers that are compatible with Shimano Di2 electronic drivetrain systems and SLR-EV dual position caliper rim brakes. Engineered to ensure precise and easy action gear shifting and outstanding all-weather braking performance, this lever-set is optimised for fast racing, long rides and competitive events.Among the greatest performing Dual Control Levers on the market, Ultegra R8150 Di2 offers 12-speed shifting with refined ergonomics and is exceptionally lightweight. Ultegra R8150 Di2 Dual Control Levers are the ultimate in reliable performance thanks to a Di2 electronic wired gear connection and lightweight rim brakes. Refined ergonomics and advanced materials show the racing pedigree of these levers. Shimano E-TubeE-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application. Shimano DCL Dual Control LeverDCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation. Ergonomic innovation is as critical to higher standard performance as the added gearing. The shift internals borrows the robustness from Shimano's MTB technology and is so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration and simply has to be experienced to be understood. SLR-EV Caliper CompatibleSLR-EV is Shimano's SLR braking technology with a dual symmetric pivot brake caliper. The short-arm brake design employs two bearings and a roller to realize greater efficiency in the pivot area and deliver superior modulation and power for braking. Together with the BC-9000 brake cable, the latest calipers deliver 36% more braking power than Shimano's previous brake model. Features: Quick and intuitive shifting Series: Ultegra R8100 Series Drivetrain: Shimano Di2 Electronic Speeds: 12-Speed Type: Caliper Rim Brake Clearly defined click feeling with the ergonomic shift lever Better bike control and confidence in race conditions Hood shape and texture optimize grip and brake power transmission Weight: 295g (pair)A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Ultegra R8100 12 Speed Chainset - Black - 50.34t}, Black
  • £299.99

Shimano Ultegra R8100 12 Speed ChainsetThe Ultegra R8100 12 Speed Chainset from Shimano offers efficient power transfer, smooth gear shifting performance and top-quality race-ready reliability. Ideal for competitive road racing, this chainset offers the optimal balance of stiffness and strength at a low weight. Plus, it features Hollowtech II crank arms, a Hollowglide outer chainring and is compatible with most modern bottom bracket standards from Shimano.Shimano's Ultegra 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 new 12-Speed road lineup, the FC-R8100 crank builds upon Shimano's legendary front shifting and transmission efficiency. With new 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. Hollowglide ChainringHollow 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 ArmsA 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. Optimised Balance of Stiffness, Strength and WeightThe 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. Features: Material: Hollowtech II Aluminium Series: Ultegra R8100 Series 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 Recommended Bottom Bracket: Press-Fit: SM-BB72-41B; Threaded: SM-BBR60 Q-Factor: 148mm Chainline: 44.5mm Drivetrain Speeds: 12-Speed Weight: 711g (52-36T); 700g (50-34T)A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Ultegra R8100 12 Speed Chainset - Black - 52.36t}, Black
  • £299.99

Shimano Ultegra R8100 12 Speed ChainsetThe Ultegra R8100 12 Speed Chainset from Shimano offers efficient power transfer, smooth gear shifting performance and top-quality race-ready reliability. Ideal for competitive road racing, this chainset offers the optimal balance of stiffness and strength at a low weight. Plus, it features Hollowtech II crank arms, a Hollowglide outer chainring and is compatible with most modern bottom bracket standards from Shimano.Shimano's Ultegra 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 new 12-Speed road lineup, the FC-R8100 crank builds upon Shimano's legendary front shifting and transmission efficiency. With new 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. Hollowglide ChainringHollow 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 ArmsA 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. Optimised Balance of Stiffness, Strength and WeightThe 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. Features: Material: Hollowtech II Aluminium Series: Ultegra R8100 Series 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 Recommended Bottom Bracket: Press-Fit: SM-BB72-41B; Threaded: SM-BBR60 Q-Factor: 148mm Chainline: 44.5mm Drivetrain Speeds: 12-Speed Weight: 711g (52-36T); 700g (50-34T)A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Ultegra R8050 Di2 11 Sp Shifter Set - AU - Grey - Pair}, Grey
  • £299.99

Shimano Ultegra R8050 Di2 11 Sp Shifter Set - AUShips from Australia - Estimated delivery in 2-4 business days.Enjoy accurate and optimised shifting with this 11 Speed Shifter Set from Shimano. Benefiting from an updated ergonomic design, it separates the shift buttons clearly, so you can efficiently work the buttons when out on the road, even through thick gloves. Multi-ShiftEach switch on this Shimano Ultegra R8050 Di2 2x11-Speed Shifter Set can be used to multi-shift. Additionally, the top hood buttons can be programmed and customised through the Shimano E-Tube app or PC software to control third-party devices.Features: Ergonomic design with greater reach Light action, define click engagement, vivid index shifting Updated internal shifting unit Powerful and controllable braking system Control third-party devices Multi-shift function Use: Road, Cyclocross, Touring, Time Trial, Commuter Material: Carbon Fibre (brake lever) Brake Levers/Gear Shifters: Shimano Ultegra Series: Ultegra Shifters: Shimano XT Speed: 11 Speed Weight: 295g Part No: ST-R8050-RTechnologies: Di2: The power and precision of Di2 are unmatched. It enables beautifully smooth shifting both front and rear. The lack of maintenance and adjustment is impressive: once you’ve customised your Di2 to shift to your preferences, it will continue to do so endlessly. E-Tube: Change all Di2 functions and operations through the shifter buttons behind the brake levers, the top hood buttons, or satellite buttons for Time Trial/Triathlon, sprinting and climbing. You can easily customise shift speed, multi-shift options and Synchro Shift. You can also customise the top hood buttons to control third party-devices, for example, to scroll through bike computer menus. The functionality on third-party computers also allows you to display Di2 system information, such as battery level and the gear you’re in.A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Ultegra R8170 C60 CL Front Disc Wheel - Black - 700c}, Black
  • £299.99
  • RRP £579.99
  • Saving you £48

Shimano Ultegra R8170 C60 Carbon CL Front Disc WheelThe Ultegra R8170 C60 Carbon CL Disc Wheel from Shimano features a 60mm-deep full-carbon rim that's ideal for high-speed and flatter race events. Suited to time trial and triathlon races, this wheel is tubeless ready for fast rolling speeds, low rolling inertia and exceptional grip in all conditions. And it's compatible with Shimano 11 and 12-Speed gear systems and it features a centre lock rotor mount for use with disc brakes.Designed for the highest speed environments and modern tyre widths, the Ultegra C60 front wheel shares its all-carbon rim profile with Dura-Ace but employs a hub that is compatible with both 11 and 12-speed cassettes.For situations where aerodynamics is the priority, the new Ultegra R8170 C60 front wheel features an all-carbon, 21 mm internal, tubeless compatible rim and a super-fast cup and cone bearing hub that is compatible with both 11 and 12-speed cassettes.Centre-Lock Disc Rotor MountThe Centre Lock system makes an easy rotor installation possible with a spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency.D2 Aerodynamic Rim ProfileAerodynamic performance is affected by wind direction. To create the D2 rim, Shimano engineers considered both frontal and crosswinds, aiming to achieve optimal performance in real-world riding conditions. Extensive prototype testing, in the wind tunnel and on the road, proved that a wide rim shape with a deep tyre bed performs best across a wide range of conditions. At yaw angles ranging from 0 to 15 degrees, the Shimano D2 rim profile reduces air drag better than others aero shape rims. This rim design also boosts lateral wheel stiffness and offers improved vertical compliance for increased control, comfort and durability on the road.Shimano E-Thru Axle SystemThe tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15 mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9 mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed.Features: Series: Ultegra R8100 Series Rim: Carbon Tubeless Ready Type: Clincher 60mm height full Carbon rim Internal Rim Width: 21mm Shared rim profile with R9200 Dura-Ace wheels Improved aerodynamics Axle: 12mm E-THRU Disc Rotor Mount: Centre Lock Weight: 738gA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Ultegra R8025 11-Speed STI Shift Levers & Hydraulic Disc Calipers - Front Shift / Rear Brake
  • £301.49
  • RRP £334.99
  • Saving you £10

Featuring trickle down technology from the range topping Dura-Ace, the Ultegra R8025 STI shifters & Hydraulic Disc Calipers provide superbly crisp, precise and ultra-smooth shifting and powerful, consistent braking performance.Suitable for 2x11 Shimano drivetrainsPowerful hydraulic disc calipers provide excellent braking performance (Rotors & mounts sold separately)New chamferred hood tops for improved gripReliable performance in all conditionsShorter reach levers for riders with smaller handsWith the addition of powerful hydraulic disc brakes to the Ultegra range, the flat mount calipers house dual pistons that provide excellent stopping power in all conditions. Designed for 11-speed, double chainring systems, these shifters boast vastly improved ergonomics for more intuitive use, and newly chamferred tops to assist with grip in wet conditions. The lever features 15mm of reach adjustment so no matter your physiological requirements you will be able to tailor them to suit. The OPTISLICK cable technology features an electronically coated outer layer that assists with shifting efficiency and helps to weatherproof the shifters against corrosion. They also benefit from easier access to the inner cables, making these shifters eminently serviceable and a solid option for a year-round winter bike. The new ergonomic design features a new front-lever curve profile, which provides even faster and more comfortable shifting and brake engagement; it ensures performance is always at 100% and that every gear click and brake-pull feels natural and efficient. With effortless shifting performance, powerful braking and supremely comfortable ergonomics these shifters are the perfect upgrade for any rider.

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Shimano Ultegra R8025 11-Speed STI Shift Levers & Hydraulic Disc Calipers - Rear Shift / Front Brake
  • £301.49
  • RRP £334.99
  • Saving you £10

Featuring trickle down technology from the range topping Dura-Ace, the Ultegra R8025 STI shifters & Hydraulic Disc Calipers provide superbly crisp, precise and ultra-smooth shifting and powerful, consistent braking performance.Suitable for 2x11 Shimano drivetrainsPowerful hydraulic disc calipers provide excellent braking performance (Rotors & mounts sold separately)New chamferred hood tops for improved gripReliable performance in all conditionsShorter reach levers for riders with smaller handsWith the addition of powerful hydraulic disc brakes to the Ultegra range, the flat mount calipers house dual pistons that provide excellent stopping power in all conditions. Designed for 11-speed, double chainring systems, these shifters boast vastly improved ergonomics for more intuitive use, and newly chamferred tops to assist with grip in wet conditions. The lever features 15mm of reach adjustment so no matter your physiological requirements you will be able to tailor them to suit. The OPTISLICK cable technology features an electronically coated outer layer that assists with shifting efficiency and helps to weatherproof the shifters against corrosion. They also benefit from easier access to the inner cables, making these shifters eminently serviceable and a solid option for a year-round winter bike. The new ergonomic design features a new front-lever curve profile, which provides even faster and more comfortable shifting and brake engagement; it ensures performance is always at 100% and that every gear click and brake-pull feels natural and efficient. With effortless shifting performance, powerful braking and supremely comfortable ergonomics these shifters are the perfect upgrade for any rider.

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CeramicSpeed OSPW System GRX/Ultegra RX 2x Rear Derailleur Spares
  • £309.99
  • RRP £439.95
  • Saving you £30

This hand-built OSPW System features a moulded carbon fibre cage for the best balance of low weight and durability. It is developed specifically for Shimano GRX/Ultegra RX 2x systems and has four spring tension settings that allow for a customised setup based on ride conditions. Since its introduction in 2015, the CeramicSpeed Oversized Pulley Wheel System has been through 13 unique derailleur compatibility developments. No other pulley system has the depth of use and trust as the CeramicSpeed OSPW, which counts both Men’s and Women’s Triathlon World Champions, World Tour professional road teams, XCO professional MTB Teams, and elite athletes worldwide as its users. Shimano GRX/Ultegra OSPW System This 13-tooth upper and 19-tooth lower OSPW System has been platform proven at races like Paris Robaix, Strada Bianche and CX World Cups. The system is built for gravel and cross disciplines and meets the needs for durability, low friction and longevity. CeramicSpeed OSPW Systems reduce friction by 35-40% over stock pulley configurations.  Only compatible with 2X systems. Not compatible with 42-tooth cassettes. In the Box: - Complete OSPW System for Shimano GRX/RX 2x11. - CeramicSpeed Pulley Oil. - Sticker Sheet.

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Shimano ST-R8000 Ultegra Double Mechanical 11 Speed STI Levers
  • £310.99
  • RRP £329.99
  • Saving you £6

Precision-engineered Ultegra STI levers with carbon levers offer powerful braking and effortless 11-speed shifting, making them the ideal choice for both enthusiast and competitive ridersShift cables are routed under the bar tape: re-development and positioning of the internal mechanism in combination with Polymer coated cables have made this possible, providing faster, lighter and smoother shifting,Vivid indexing provides a constant amount of shift lever force across all 11 sprockets,Ergonomic shift arc follows natural hand movement with inward shift stroke distance reduced for rapid and precise gear changes,Powerful and controllable braking thanks to SLR-EV compatibility,Tuneable reach adjusters enable custom fitment for all hands.

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