Search found 4944 products for shimano

Shimano XTR M9100 12 Speed Cassette - Black-Silver - 10-45t}, Black-Silver
  • £324.99

Shimano XTR M9100 12 Speed CassetteThe Shimano XTR M9100 12 Speed Cassette provides the smoothest, fastest and most reliable shifting performance imaginable. Featuring the new Hyperglide+ technology, which delivers the highest level of superior shifting, power-transfer and shifting stability.This cassette design is stiffer, lighter and more durable than anything that has come before it, combining titanium, aluminium and steel where it is best suited, this cassette is optimised for the toughest and most demanding rigours of mountain biking.Superb Shifting Smoothness Anywhere on the MountainDesigned with two intentions, the 10-45T cluster, featuring the Rhythm Step spec for exceptional Cross-Country shifting smoothness. This wide range can tackle any scenario and provide superb, smooth and consistent performance throughout the range of the cassette. The second gear cluster option is the Wide Range spec, which has been optimised for Enduro. providing exceptional shifting performance and reliability as the Rhythm Step does but has a huge 51T sprocket at the low end so you can climb any mountain gradient with ease.Features:Material: 5x Sprockets: Titanium; 3x Sprockets, Spider, Lock-Ring: Aluminium; 4x Sprockets: SteelUse: Mountain BikeDrivetrain Speed: 12-SpeedGearing Options: 10-45T (12-Speed Rhythm Step spec for Cross Country); 10-51T (12-speed Wide Range spec for Enduro)Freehub Engagement: Shimano Micro-SplineCompatible Chain: Shimano CN-M9100Spider Arm: OneType: HYPERGLIDE+Cassette Ratio: 10-45T (10-12-14-16-18-21-24-28-32-36-40-45T); 10-51T (10-12-14-16-18-21-24-28-33-39-45-51T)Part No: CS-M9100-12Weight: 349g (10-45T); 359g (10-52T)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.

VIEW ITEM
Shimano GRX 810 Dropper Release Disc Brake - Black - Left Hand}, Black
  • £324.99

Shimano GRX 810 Dropper Release Disc BrakeReady to thrive in the toughest terrain, the GRX 810 Dropper Release Disc Brake brings you fine speed control and outstanding stopping power in all riding conditions. The perfect addition to your multi terrain gravel bike, Shimano has also added mechanical dropper seatpost control. This means you can easily change your saddle height for a climb or descent without changing your hand position, which is key for staying in control as you’re riding at your limits.Whether you're tackling a challenging downhill descent or exploring new terrain types, you'll benefit from its integrated cable pulling system with an 8.3mm max cable stroke delivering instant saddle height control. Enjoy the freedom of being able to easily raise and lower your dropper based on the terrain conditions with minimal effort from this sleek model.Heat Resistant Disc BrakePacked with some of the finest Shimano technologies around such as reach adjustment, you can fine-tune its feel to suit your hand size, type of riding and individual preferences. Taking braking a step further, its Servo Wave technology makes the initial pad travel fast, so little lever movement is needed to bring the pads into contact with the rotor. This increases your stopping power output rapidly and gives you improved control. Easy to set up and maintain, this disc brake's caliper delivers excellent heat dissipation for greater multi-surface braking control. Its Ice Tech technology allows you to benefit from its high rigidity with an optimised, lightweight construction.Features:Shifter Type: Single lever for adjustable seat postFront or Rear: Front brake with left-hand lever (UK spec)Single or Pair: SingleSpeed: N/A (brake only with dropper post control)Use: Gravel, Road Oil Type: Mineral oilMount: Flat mountReach Adjust: TooledHandlebar Clamp Band Inner Diameter: 23.8-24.2mmAnti-slip ribbed surface texture and brake lever coating Easy and clean bleeding systemSimple wheel replacementIce TechnologiesConvenient tool accessManufacturer's Part Number: ST-RX810-LAWeight: 263gTechnologies:Servo Wave Action: When you pull a Servo Wave brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved controlReach Adjust: Brake lever is equipped with a reach adjust mechanism. The distance from the handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferencesDual Control Lever: Ergonomic innovation is probably more critical to the higher standard performance than the added gearing. The shift internals borrows the robustness from Shimano's 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 understoodIce Technologies: XTR, SAINT, DEORE XT, SLX, ZEE, DEORE LX calipers are bundled with an Ice Technology piston to achieve optimised lightweight, high rigidity and heat dissipation. Oversized pistons transfer hydraulic power directly to the brake pad, and ceramic material is used to avoid heat transfer for constant stable braking, providing efficient stopping power transfer without lossOne Way Bleeding: One Way Bleeding was developed for quick and easy prevention of air in our hydraulic system. We have streamlined the oil route throughout the system to prevent air bubbles from being captured in the system. One-way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding systemClick HERE to check out the Shimano Brake Reference Guides.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.

VIEW ITEM
Shimano GRX 810 Dropper Release Disc Brake Disc Brake Callipers
  • £324.99

Featuring a streamlined and simplified design, the stunning Shimano GRX dropper lever minimises stress and distractions, so you can keep your momentum out on the road. Whether you're tackling a challenging downhill descent or exploring new unknown terrain conditions, you'll benefit from its integrated cable pulling system with a 9mm max cable stroke delivering instant stopping performance. Enjoy the freedom of being able to easily raise and lower your dropper based on the terrain conditions with minimal effort from this sleek model.   Packed with some of the finest Shimano technologies around such as reach adjustment, you can fine-tune the Shimano GRX dropper compatible lever to feel to suit your hand size, type of riding and individual preferences. Taking braking a step further, its Servo Wave technology makes the initial pad travel fast, so little lever movement is needed to bring the pads into contact with the rotor. This increases your stopping power output rapidly and gives you improved control. Easy to set up and maintain, this brake's caliper delivers excellent heat dissipation for greater multi-surface braking control. Its Ice Tech technology allows you to benefit from its high rigidity with optimised, lightweight construction.

VIEW ITEM
Shimano Dura Ace R9200 12 Speed Cassette
  • £324.99
  • RRP £329.99
  • Saving you £2

Super lightweight 12speed HG+ cassette with a rigid carbon and alloy carrier for excellent shifting even under the most demanding gear changesHyperglide+ sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load,Close ratio gearing allows a more efficient use of energy through finer cadence control,Largest sprockets are mounted on lightweight alloy and carbon carriers to reduce weight and increase rigidity,5 largest sprockets are made from titanium to reduce weight without sacrificing strength,Sprockets are extensively cut away and drilled to further reduce weight without reducing rigidity,Nickel-plated finish offers hard wearing resistance to corrosion,Alloy cassette lockring,For Super Narrow 12-speed chains.

VIEW ITEM
Shimano Dura-Ace Di2 R9250 Front Derailleur
  • £328.49
  • RRP £399.99
  • Saving you £18

Elite road racers demand reliable and precise shifting, 12-speed Dura-Ace R9150 delivers with its super-lightweight and compact design Synchronized Shift designed, developed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur The Di2 front derailleur's operation is pioneering, smooth shifting is guaranteed thanks to wireless communication with the gear levers. What's more, shifting the rear derailleur automatically trims the front derailleur The biggest difference you will notice is just how much quicker and effortlessly smoother shifting on the front chainrings is, even under load The 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 shifts The front derailleur also trims automatically; the cage moves in response to the position of the rear derailleur on the cassette to ensure no chain rub and a quiet unobtrusive ride, enabling you to concentrate on the road ahead Braze-on fit as standard; if your bike does not have a braze-on mount seat tube adapters are available 12-speed E-tube SD300 wire compatible

VIEW ITEM
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. 

VIEW ITEM
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.

VIEW ITEM
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.

VIEW ITEM
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.

VIEW ITEM
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.

VIEW ITEM
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.

VIEW ITEM
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.

VIEW ITEM
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.

VIEW ITEM
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.

VIEW ITEM
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.

VIEW ITEM
Shimano CS-M9100 XTR Cassette
  • £329.99

Key Features:Let you pedal continuously while shifting,Increased acceleration by reducing inertia and weight by BEAM SPIDER construction,Definitive shifting,New MICRO SPLINE * construction to engage FREEHUB body.

VIEW ITEM
Shimano ST-R8020 Bled Hydraulic Disc Flat Mount Calliper Mechanical STI Set
  • £334.99

Precision-engineered Ultegra STI levers with hydraulic disc brakes give you control, modulation and power with minimal effort in all riding conditionsShift 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 shiftingVivid indexing provides a constant amount of shift lever force across all 11 sprocketsErgonomic shift arc follows natural hand movement with inward shift stroke distance reduced for rapid and precise gear changesHydraulic brake lever provides excellent stopping power with less effort especially from the hood positionHydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wearFree stroke adjustment for pad to rotor contact settingTuneable reach adjusters enable custom fitment for all handsKit contains bled ST-R8020 STI, BR-R8070 flat mount brake callipers with pads, hoses and mineral oil (without rotors or adapters).

VIEW ITEM
Shimano Ultegra ST-R0825 Short Reach Hydraulic 11 Speed STI Levers
  • £334.99

New ULTEGRA R8000 series is "pro-proven" as it is a direct trickle down from DURA-ACE groupset. As road bike component, the stress-free operation is one of the most important feature to lead all day riding comfort with braking and shifting.Available with or without Brake Caliper and MountKey Features:Smaller lever size and new positioning improves ergonomics,Dedicated lever control for riders with smaller hands,Redesigned internal shifting unit,Greater control in all conditions for riders with smaller hands,Quick and intuitive rear shifting operation,Same light shifting operation as ULTEGRA R8000.

VIEW ITEM
Shimano Ultegra R8025 2x11 Speed Short Reach Disc Brake Disc Brake Callipers
  • £334.99

Featuring a smaller lever size and new positioning, the Ultegra R8025's lever improves the overall braking and shifting experience for riders with smaller hands. With a redesigned internal shifting unit, you'll benefit from its quick and intuitive gear changes and operation. Enjoy greater control in all conditions with some of the best technologies at your fingertips helping you wherever the road takes you. Behind the "click" you hear and feel every time you shift, is its Shimano Index Shifting System technology providing you with light, precise and consistent gear changes. Completing this set is a powerful flat mount caliper which gives you constant stable braking without any power loss. Its oversized pistons use Ice Tech technology to achieve an optimised low weight, high rigidity and excellent heat dissipation. Furthermore, this technology transfers hydraulic power directly to the brake pad and ceramic material is used to avoid heat transfer. As a result, you'll benefit from longer lasting stopping performance and modulation, making it an ideal upgrade for going further than before ride after ride. Click here to view the Shimano Brake Reference Guide.

VIEW ITEM
Shimano RS710 C32 Tubeless Disc Brake Rear Wheel
  • £337.49
  • RRP £519.99
  • Saving you £35

The Shimano RS710 C32 disc-brake rear wheel is a great option if you’re looking, either to upgrade your bike’s wheels one at a time or if you simply need a spare. If it’s a full wheelset you’re looking for check out the RS710 C32 wheelset The famed Japanese-component makers have used this series to introduce their most affordable, carbon, road wheel ever. That being said, while it might be a more budget conscious option, that’s not to say its lacking in quality. As is the norm with Shimano’s mid-tier products, this wheel benefits from the technological advances that have been striven for in the production of their top-tier products. The end product is a wheel that’s impressively light—considering the price point—but also incorporates some of the aero-optimisation you’d expect of a modern wheel. Climbing Excellence The Shimano RS710 C32 rear is the perfect for those days spent climbing in the Alps. Weighing a respectable 839g, while there might be lighter wheels out there, at this price point it represents excellent value. In terms of design, the styling has been kept sleek and minimal. This is a stylish hoop in its own, but being so simplistic in its design it will also pair well with a number of other wheels without looking too out of place. Wider Rim, Better Braking As has become the norm in modern wheels, the RS710 C32 has been engineered to be wider than it might have been in the past. The hooked-rim profile is designed to optimally seat a 25mm to 32mm, tubeless tyre. Using a wider, tubeless tyre means you can run your tyres at lower pressures. For the traditionalists, used to pumping up 23mm tyres to 120psi, this might be something of an adjustment. But, rest assured, the accepted wisdom today is that the lower-pressure-wider-tyre combo is faster and more resilient to punctures. The RS710 C32 rear wheel has been engineered for hydraulic disc brakes; the benefits of which are numerous. With the latest disc brake technology, you’ll have consistent stopping power in the wet and on steep and/or long descents. Whether you’re in need of a replacement rear carbon wheel or an upgrade, the Shimano RS710 C46 is an aero-optimised, reliable option. Product Features 32mm rim depth Weight: 839g Internal-rim width of 21mm External-rim width of 28mm 24 spokes, bladed and butted Tubeless Ready Disc mount: Center-Lock 140 mm disc brake rotor compatible Recommended Tyre Size: 25-622—32-622 Pawl and Ratchet Engagement

VIEW ITEM
expand_less