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Shimano ST-7970 Dura-Ace Di2 10 Speed Double STI Levers
  • £329.99
  • RRP £549.99
  • Saving you £40

The most advanced level of shifting technology: at the touch of a switch Dura-Ace Di2 is quick shifting, smooth, and effortless, making for unmatched drivetrain efficiency.Key Features:The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also gives effortless gear shifts,Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold,Buttons are located in a near identical place to the positions you|d assume for shifting using a mechanical Shimano STI,Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, and a titanium clamp band / fixing bolt,Brake lever pivot is positioned to increase power giving excellent ergonomics when riding on the hoods,Finely tuneable reach adjusters for the levers enable custom fitment for all hands,The Di2 STIs are also compatible with the FlightDeck computer (SC-7900), measuring important data such as heart rate, altitude, cadence, gear position, battery indicator, and more,Levers are supplied without electrical cables, as these need to be ordered separately to suit,Weight is 255 grams a pair.

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Shimano Ultegra ST-R8070 Di2 11 Sp Road Brakes 2018 - Black - Left Rear}, Black
  • £329.99

Shimano Ultegra ST-R8070 Di2 11 Sp Road BrakesThis 11 speed brake lever features a dual control design, which allows you to control both your braking and your shifting operation. It features an updated button feel and a layout which ensures quick and precise shifting, even when wearing thick gloves. Shimano has also equipped this model with a tooled adjustable reach, so you can fine-tune the distance between the lever and your handle to perfectly match your hand size, riding style and the terrain conditions. One final highlight is its programmable ST button switch at the top of the hood, which makes shifting quick and easy.- Wirelessly customize functions like SHIMANO SYNCHRONIZED SHIFT over Bluetooth while out on a ride.- Automatically checks for firmware updates on each startup to ensure all components are running the latest version.- PC, smartphone and tablet applications can help you quickly diagnose errors and simplify the repair process.- Beautiful visualization of your real-time SHIMANO STEPS riding data on your smartphone.- Advanced all-weather design resists rusting, stretching, and freezing.Features: Use: Road Lever Type: Dual Control Lever Oil: Shimano Mineral Oil Recommended Brake Caliper: BR-R8070 Recommended Brake Hose Kit: SM-BH90-JK-SSR Clamp Band Inner Diameter: 23.8 - 24.2 Cables/Hose Included: No Single or Pair: Single Tooled Reach Adjust: Yes Part Numbers: Left: R8070DRF; Right: R8070DLR Weight: 180gTechnologies: Reach Adjust: Brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences. Dual Control Lever (DCL): DCL stands for DUAL CONTROL LEVER. It has brake and shifting functions in the system and enables easy operation. Ergonomic innovation is probably more critical to the higher standard performance than the added gearing. The shift internals borrow the robustness from our MTB technology and are 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. The DURA-ACE/ULTEGRA/105 Dual Control Lever have an optimized structure with features that include the lighter weight pivot section in the near side of the shifting unit and the integral shifting cable for lighter steering. Its many component parts are made so compact and precise to achieve unprecedented high-speed performance. Freestroke: The distance from initial lever position to pad contact point can be adjusted to suit any hand size, type of riding and individual rider preferences. E-Tube: The E-TUBE platform's “Plug & play” and D-FLY wireless connections make it easier than ever to check the system's status, and apply customized settings to DI2 and SHIMANO STEPS components with a PC, tablet or smart phone.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 R8150 Di2 12 Sp Rear Derailleur - Black - Shadow}, Black
  • £329.99
  • RRP £379.99
  • Saving you £13

Shimano Ultegra R8150 Di2 12 Sp Rear DerailleurEngineered to offer rapid and precise gear shifting, the Ultegra R8150 Di2 12 Speed Rear Derailleur from Shimano is the most efficient and reliable 12-Speed derailleur available. It's compatible with Shimano Di2 electronic drivetrain systems, which enables you to click through the 12-Speed gear range with minimal effort and the utmost accuracy.Now simplified with a single derailleur cage length, the new 12-Speed Shimano Ultegra R8150 rear derailleur packs the fastest, most precise shifting on the market into a more affordable option. With the fastest, most accurate shifting on the market, the new 12-Speed Ultegra R8150 rear derailleur is more versatile than ever thanks to a single cage length option compatible with 11-28, 11-30, and 11-34 cassettes. Shimano Di2 Electronic Drivetrain PerformanceThanks to its lightning-fast, accurate, and reliable shifting performance, Di2 puts riders in complete control and ensures a seamless interface between the cyclist and bike like never before. Creating and continually improving the world's best shifting is a complicated undertaking requiring constant technological advancements. From hardware to software, Shimano Di2 technology is on the cutting edge, striving to deliver the best rider experience possible now and in the future. Shimano E-Tube CompatibleE-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. Direct Mount CompatibleRear wheels are easier to remove with a mounting option for Shimano Shadow RD and Shimano Shadow RD+. The direct mount feature is designed to suit a wide range of contemporary frames with large-section chainstays, in particular, mountain bikes with thru-axle dropouts. Shimano Shadow Low-Profile Rear DerailleurThe mechanism rear derailleur, Shimano Shadow RD, is intended for more aggressive riding. Its super low profile design carries many benefits. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance. Features: Fastest ever rear shifting, 58% faster than RD-R9150 Compact design includes an integrated wireless unit, charger, and switch LED status indicator Battery indicator Pairing Adjust mode, etc. Wider range capacity Max. Low Sprocket: 34T Speeds: 12-Speed Weight: 262gA 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 XTR M9120 MTB Crankset - Grey, Grey
  • £329.99

Shimano XTR M9120 MTB CranksetThis Shimano XTR M9120 Crankset is the top-end Shimano 1x12-Speed crankset. This crankset is delivered as the crankset only, you can choose whichever chainring size suits your riding style, cycling requirements and cycling demands separately. Featuring the iconic Shimano Hollowtech II construction process, the XTR M9120 is the most advanced crankset on the market today. Providing the highest drivetrain efficiency, stiffness and lightest weight and it achieves this exceptional combination in a sleek and stylish 1x or 2x direct mount transmission.Features: Material: Aluminium Use: XC, Marathon, Enduro Type: Shimano Hollowtech II Bolt Circle Diameter: Direct Mount Drivetrain Compatibility: 12-Speed, 11-Speed (With Shimano Wide Flange Cassette) Recommended Bottom Bracket: Press-Fit: SM-BB94-41A; Threaded: SM-BB93 Q-Factor: 168mm Chain Line: 52mm Weight: 511gPlease Note: This product page is for the Crankset only, chainring sold separately.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 Dura-Ace R9200 12 Speed Cassette - Silver - 11-28t}, Silver
  • £329.99

Shimano Dura-Ace R9200 12 Speed CassetteThe Dura-Ace R9200 12 Speed Cassette from Shimano provides fast, smooth and seamless gear shifting performance anywhere. The Dura-Ace 12-Speed gear system is a top-level gearset, and this cassette offers a wide gear range that's reliable, efficient and lightweight.The uninterrupted shifting experience of the Dura-Ace R9200 12-speed cassette range lets you climb, sprint, and push your limits without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12-speed freehub bodies. Shimano HYPERGLIDE+ Gear Shifting PrecisionHYPERGLIDE+ cassettes have revolutionized off-road shifting with their seamless shifts both up and down the gear range. Now it's time for technology to change road cycling. Even during maximal efforts up a climb or nearing the finish line, riders no longer need to back off to perform a shift. In any gear, Dura-Ace R9250 drivetrains maximize efficiency thanks to larger cogs and retain compatibility with existing 11-speed freehub bodies. All this while increasing to 12-gears and without increasing weight, Dura-Ace CS-R9200 cassettes are the new paradigm in road shifting. Features: Series: Dura-Ace R9200 Series Faster, seamless shifts under maximum pedalling load Refined 12 step gear combination provides peak efficiency and accelerating performance for every situation Add wider 34T spec for pro-race usage Compatible with new 12-Speed and road 11-Speed Freehub body Gear Combination: 11-12-13-14-15-16-17-19-21-24-27-30T / 11-12-13-14-15-17-19-21-24-27-30-34T Type: HYPERGLIDE+ Compatible Chain: Shimano HG 12-Speed Weight: 223g (11-30T); 253g (11-34T)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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Fulcrum Rapid Red 5 DB Wheelset - Black - Shimano}, Black
  • £329.99
  • RRP £389.99
  • Saving you £15

Fulcrum Rapid Red 5 DB WheelsetA high-quality set of gravel bike wheels for the adventurous road rider, this Rapid Red 5 pair by Fulcrum is perfect for tackling tough terrain. Featuring disc brake braking for enhanced control, they're ready to take on gravel ground, bikepacking trips and unpaved pathways. Made from durable aluminium, each rim uses its 23mm-width to bring balance and stability to the most arduous journeys, letting you ride everywhere with the utmost confidence.Rapid-Rolling, Aluminium-Made, Gravel WheelsetThe 24mm height of the rim also cushions the wheel against the impacts of rough surface riding, while the Two-Way-Fit tubeless-ready design enhances puncture protection and cornering grip when running lower tyre pressures. Spinning smoothly and steadily on aluminium hubs, this durable and dependable wheelset maintains a consistent motion across tough terrains, with a fast-engaging freehub to push you on with improved power and pace.With 24 straight-pull spokes strengthening the wheels for the tribulations of rough and tumble road riding, this Rapid Red 5 wheelset is the perfect choice for the roads and routes less travelled.Features:Rim Material: AluminiumRim Depth: 24mmExternal Rim Width: 28mmInternal Rim Width: 23mmBrake Type: Disc BrakeSpoke Material: AluminiumSpoke Type: Aluminium, rounded, straight-pullSpoke Count:  24Nipple Material: AluminiumTubeless Ready:  Yes, Two-Way-FitTyre Type: ClincherHub Material: Aluminium with Aluminium flangesFreehub: Shimano or SRAM XDAxle Compatibility: Front: HH15-100/HH12-100; Rear: HH12-142Weight: 1760gWeight Limit: 120kgBuy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Ultegra R8170 C60 Carbon CL Disc Wheel - Black - Rear}, Black
  • £329.99
  • RRP £679.99
  • Saving you £51

Shimano Ultegra R8170 C60 Carbon CL Rear 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 wheelset 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 wheelset 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 tire 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. Rear Wheel OPTBAL Spoke SystemThe OPTBAL rear wheel spoke system features 21 spokes—14 on the drive side and 7 on the non-drive side. Cassette spacing in today's wheels produces unbalanced tension in traditional 1:1 spoke systems. This unbalance is intensified with the 11-speed cassette, producing nearly double the tension on the drive side spokes. Generally, high and low tension spokes have respectively tendency toward breaking down and coming loose spoke nipples. Unbalanced tension affects durability and strength. The OPTBAL design rebalances spoke tension, enhancing wheel rigidity and strength for a more durable wheel. Features: Series: Ultegra R8100 Series Rim: Carbon Tubeless Ready 60 mm height full carbon rim Internal Rim Width: 21mm Shared rim profile with R9200 Dura-Ace wheels Improved aerodynamics Axle Size: 12x142mm Rear Speeds: 11/12-Speed Shimano Disc Rotor Mount: Centre Lock Single or Pair: Single, rear wheel only Weight: 911gA 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 XTR M9100 12 Speed Cassette Cassettes
  • £329.99

The XTR M9100 12 Speed Cassette has been created with an increased transmission ratio, is 30% stiffer than previous models and keeps a lower weight to maximise efficiency when making those vital shifts. Equipped with a 10-45 or 10-51 teeth system, cadence jumps when moving between gears are kept low to maintain high-speeds and steady rhythm as you blast through your run.  Featuring Hyperglide+ technology, the cassette benefits from small shifting ramps leading the chain to the next sprocket when going up through the gears and on the way back down, stopping the chain from dismounting. This ensures consistent gear-stepping at all times with no impact to your cadence.  A fantastic set of sprockets for the thrill-seeking trail and downhill rider, the XTR M9100 12 Speed Cassette is more than equipped for the rowdiest of rides. 

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Shimano XTR M9120 12 Speed Crankset Cranksets
  • £329.99
  • RRP £344.99
  • Saving you £4

All set for adventurous rides, this stunning component features a sturdy aluminium construction which makes it more than capable of handling the challenges of an all-day epic. Delivered as the crankset only, it is equipped with a 1x and 2x compatible direct mount transmission which allows you to choose a chainring size that best suits your riding style separately. This is the ultimate choice of upgrade for riders who want more freedom to customise your crank setup for achieving a podium-topping finish. Please Note: This product page is for the Crankset only, chainring sold separately. Technologies: 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.

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Shimano Ultegra R8170 C60 Carbon CL Rear Disc Wheel Back Wheels
  • £329.99
  • RRP £679.99
  • Saving you £51

Designed for the highest speed environments and modern tyre widths, the Ultegra C60 wheelset 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 wheelset 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 Mount The 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 Profile Aerodynamic 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 tire 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. Rear Wheel OPTBAL Spoke System The OPTBAL rear wheel spoke system features 21 spokes—14 on the drive side and 7 on the non-drive side. Cassette spacing in today’s wheels produces unbalanced tension in traditional 1:1 spoke systems. This unbalance is intensified with the 11-speed cassette, producing nearly double the tension on the drive side spokes. Generally, high and low tension spokes have respectively tendency toward breaking down and coming loose spoke nipples. Unbalanced tension affects durability and strength. The OPTBAL design rebalances spoke tension, enhancing wheel rigidity and strength for a more durable wheel.

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Shimano Ultegra R8150 Di2 12 Speed Rear Derailleur Rear Derailleurs
  • £329.99
  • RRP £379.99
  • Saving you £13

Now simplified with a single derailleur cage length, the new 12-Speed Shimano Ultegra R8150 rear derailleur packs the fastest, most precise shifting on the market into a more affordable option. With the fastest, most accurate shifting on the market, the new 12-Speed Ultegra R8150 rear derailleur is more versatile than ever thanks to a single cage length option compatible with 11-28, 11-30, and 11-34 cassettes. Shimano Di2 Electronic Drivetrain Performance Thanks to its lightning-fast, accurate, and reliable shifting performance, Di2 puts riders in complete control and ensures a seamless interface between the cyclist and bike like never before. Creating and continually improving the world's best shifting is a complicated undertaking requiring constant technological advancements. From hardware to software, Shimano Di2 technology is on the cutting edge, striving to deliver the best rider experience possible now and in the future. Shimano E-Tube Compatible 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. Direct Mount Compatible Rear wheels are easier to remove with a mounting option for SHIMANO SHADOW RD and SHIMANO SHADOW RD+. The direct mount feature is designed to suit a wide range of contemporary frames with large-section chainstays, in particular, mountain bikes with thru-axle dropouts. Shimano Shadow Low-Profile Rear Derailleur The mechanism rear derailleur, Shimano Shadow RD, is intended for more aggressive riding. Its super low profile design carries many benefits. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance.

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Fulcrum Racing 4 C17 Road Wheelset - Black-Multi - Shimano}, Black-Multi
  • £329.99
  • RRP £389.99
  • Saving you £15

Fulcrum Racing 4 C17 Road Wheelset (2019)If you're in the market for a lighter, more aerodynamic set of wheels for your road bike, then the Fulcrum Racing 4 could be the option for you. With 35mm alloy rim providing you with aerodynamic benefits, sealed bearing hubs laced up using bladed spokes, the Racing 4 is truly a modern all-rounder wheelset.Exceptional Stability, Power-Transfer and DurabilityThe 35mm rim profile makes a huge difference when riding on the flats when compared to a low-profile rim. This wheel cruises along with amazing efficiency while still retaining excellent stability during windy weather conditions. Although this wheel features a larger rim profile, it's still an exceptional contender for climbing sessions. It's very agile, superb for sprinting and thanks to top-level Fulcrum design and construction, it's very durable and reliable.Features: Material: Aluminium Wheel Type: Clincher Brake Type: Rim brake only Recommended Tyre Width: 25 - 28 mm Axle: QR (Quick Release) Skewers: Included Tubeless Compatible: No Rim Height: 35mm Rim Width (Inner): 17mm Rim Width (Outer): 23.2mm  Type: Rim Brake  Spoke Count: Front: 16; Rear: 21 Front Lacing Pattern: Radial Rear Lacing Pattern: Radial (left), 2-cross (right) Spoke Type: Aero / straight pull Spoke Material: Stainless steel Nipple Material: Aluminium  Cassette Compatibility: 9, 10, 11-speed, HG (Shimano) or Campagnolo Includes: Fulcrum wheelset, 2 x Fulcrum quick releases, rim tape, 1 x spacer (Shimano version only) Rider Weight Limit: 109kg Weight: 1720g (Pair) Buy Fulcrum Wheels&Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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