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4iiii Dura Ace 9100 Left-Hand Crank with Precision 2.0 Power Meter
  • £358.99
  • RRP £429.00
  • Saving you £16

Whether you’re a pro or simply training hard, PRECISION powermeters deliver industry-leading accuracy, highly dependable cadence data, 3D powermeter technology capable of measuring tri-axial strain on your crank arm. Designed to be durable and lightweight, compatible with  ANT+ and Bluetooth head units, PRECISION helps you train harder and smarter.PRECISION Ride Ready comes installed on a new Shimano left crank arm (105, Ultegra, or Dura-Ace). These crank arms will fit bottom brackets using the Hollowtech ii interface.Key Features:3D powermeter technology (patent pending) measures tri-axial strain on your crank arm,Accurate, consistent data,Lightweight, compact design,Battery status indicator via 4iiii app,Compatible with ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products,User-friendly app and configurable rider compensation scale factor,Easy setup and maintenance,.Specifications:Weight: 9 grams,Data accuracy: +/- 1% error margin,Battery life: 100+ riding hours on 2032 coin cell battery.

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Shimano Dura-Ace R9270 Di2 12 Speed Disc Shifter - Black - Left Front}, Black
  • £359.99
  • RRP £429.99
  • Saving you £16

Shimano Dura-Ace R9270 Di2 12 Speed Disc ShifterThe Dura-Ace R9270 Di2 12 Speed Disc Shifter from Shimano is a dual control gear/brake lever for use with Shimano 12-Speed drivetrain systems and hydraulic disc brakes. It features an ergonomic construction with a carbon fibre lever blade and titanium hardware. And it's compatible with Shimano Di2 12-Speed electronic groupsets and Shimano hydraulic disc brakes for the best road gear shifting performance and all-weather braking reliability.All-new lever ergonomics on the Dura-Ace ST-R9270 dual control levers bring new levels of comfort and control to road cycling. With the fastest wireless shifting available and even more precise brake modulation, Dura-Ace redefines performance. Now featuring Servo Wave Action brake technology, the new Dura-Ace ST-R9270 brake lever delivers modulation and control like never before. Wireless shifting keeps your bike looking clean while offering the fastest, most precise gear changes available. All of this resides in a Dual Control Lever to employs the most advanced materials to offer lightweight and refined ergonomics that provide comfort and control for the most demanding conditions. Servo Wave Precise Braking ControlWhen 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 control. 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 must be experienced to be understood.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. Please Note: This item is for the dual control shift lever only. The complete brake assembly that includes the hydraulic disc brake caliper is sold separately. Features: Quick and intuitive shifting Series: Dura-Ace R9200 Series Drivetrain: Shimano Di2 Electronic Speeds: 12-Speed Carbon fibre brake lever and titanium hardware SERVO WAVE technology optimizes brake control Raised hood peak improves ergonomics, while a longer hood body increases hand support Compatible with satellite shifters 1.5 to 2 years of battery life with easy-to-change CR1632 shifter batteriesA 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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4iiii Dura-Ace FC-R9100 Left Arm Power Meter - Black, Black
  • £376.00
  • RRP £429.00
  • Saving you £12

4iiii Dura-Ace FC-R9100 Left Arm Power MeterTake your training to the next level with this Left Arm Power Meter from 4iiii. This meter records your pedal power and wirelessly sends your overall output directly to a compatible device, so you can always stay on top of your performance and perfect your pedal output for race day. Innovative, Onboard Power and Cadence MeterDesigned for use with Shimano Dura-Ace FC-R9100 cranksets, it utilises ANT+ and Bluetooth connectivity to relay your data right to your smartphone or onboard computer, giving precision measurements to within +/-1% to keep you pedalling at your peak. With 100+ hours of battery life and a strong IPX7 waterproof rating, it is an excellent accessory for the performance-focused rider.Features:Accuracy: Measures to within +/-1%Crankset compatibility: Shimano Dura-Ace FC-R9100Wireless Connectivity: ANT+, BluetoothDimensions: 37.7x27.6x7.5mmPower Range: 0-4000wCadence Range: 30-150rpmWaterproof Rating: IPX7, IPX5Battery: CR2032 Lithium-Ion coin cell, 100+ hoursWeight: 8gBuy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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RockShox Seatpost Reverb Stealth - Plunger Remote (Right/Above, Left/Below)
  • £384.00

Seatpost Reverb Stealth - Plunger Remote (Right/Above, Left/Below) 31.6mm - Includes Bleed Kit & Matchmaker X Mount - C1Post diameter: 30.9mm / 31.6mm ,Travel: 100mm, 125mm, 150mm, 170mm, 200mm ,Remote: Standard (L-Below, R-Above) ,Connection type: Standard ,Hose length: 2000mm ,Color (Telescoping Seatpost): Black ,Clamp type: Discrete.

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Favero Assioma UNO Power Meter Pedals - Black - Grey - Left Side Sensor}, Black - Grey
  • £399.99
  • RRP £449.00
  • Saving you £11

Favero Assioma UNO Power Meter PedalsThese Power Meter Pedals from Favero have been designed to help you perform during training sessions. Featuring a single power sensor on the left pedal, they utilise IAV Cycling Dynamics technology to guarantee reliable pedalling data, not just an estimation. These pedals are Bluetooth and ANT+ compatible and benefit from up to 50 hours of battery life, making them the ideal choice for any cyclist looking to up their game. IAV Power SystemMany power meters calculate the power using the Average Angular Velocity (AVG) per rotation, instead of the instantaneous Angular Velocity (REAL) value: this may introduce an additional error, up to 4.5% compared to the declared accuracy. Assioma, thanks to its exclusive IAV Power system and an integrated gyroscope, measures the actual instantaneous angular velocity to guarantee the same 1% degree of accuracy with any style of pedalling, even with oval chainrings.Automatic Temperature CompensationRain, snow, mud, or sweltering heat: Automatic Temperature Compensation (ATC) ensures exact, consistent watt measurements in any weather condition at temperatures between -10°C and 60°C.Waterproof, Resistant and the Lightest Ever MadeThe lightest and most compact pedal-based power meter made by Favero: with no protruding elements, it does not interfere with the pedalling. Not even when cornering. Protected by a bi-component resin block, the power meter sensor is extremely resistant to shocks and fully waterproof.Features:Power Sensor: On the left pedalCadence Sensor: Included, inbuiltGyroscope: Included, inbuiltPower Calculation System: IAV (Instantaneous Angular Velocity-based)IAV Cycling Dynamics: YesOval-chainring Compatible: YesBattery Type: Rechargeable Lithium batteryBattery Life: At least 50 hoursRadio Communication: Bluetooth v4.0, ANT+ PWR profile (CT + PO)Accuracy Power Measurement: 1%Temperature Compensation: -10°C / +60°CWater Resistance Degree: IP67Q-Factor: 54mmHardware upgrade to Assioma DUO always availableCompatible Cleats: Original LOOK Kéo and Favero cleats (red and black)Bike Type: Racing, RoadMade in ItalyWarranty: 2 yearsTotal Weight Per Pedal: 151.5g (battery included)In the Box:Left pedal with power sensorRight pedal without power sensorBattery charger including plugs (EU, US, UK, AU)1 two-metre-long micro-USB/USB cable with magnetic connector2 red cleats float 6° (LOOK Kéo compatible)Hex key and 4 washers for the installation• User manualTechnologies:Easy to Install: Install and transfer your Assioma from one bike to another just like normal pedals, easily and without extra tools. Just screw them on your bike crank arms and you are ready to pedal.IAV Cycling Dynamics: Assioma supports the advanced metrics IAV Cycling Dynamics: IAV Power Phase and IAV Rider Position. These metrics, combined with the classic power data, allow analysing in detail the pedalling technique and how the cyclist's position on the bike influences performances.IAV Power and Gyroscope: Unlike others, the measurements of Assioma are not affected by errors related to very irregular pedalling (e.g. sprint uphill) or the use of oval chainrings. This is because Assioma is able to detect the actual instantaneous angular velocity of the pedal stroke, thus giving you the degree of accuracy of 1% in any situation. Not only in the laboratory.Bluetooth and ANT+ SMART: Assioma communicates via Bluetooth and ANT+ with bike computers and smartphones, both Android and iOS.Accuracy and Consistency: Assioma provides accurate watt measurements with great consistency and stability in the actual on-road use conditions and at any temperature between -10°C and 60°C. Thanks to the ATC (Automatic Temperature Compensation) too.Waterproof, resistant and light: Assioma is the lightest pedal-based power meter ever made. Thanks to its compact design, it never interferes with the pedalling. Not even when cornering. The power sensors are protected in a bi-component resin block, extremely resistant to shocks and completely waterproof.Rechargeable and Green: Assioma is the only pedal-based power meter with integrated rechargeable batteries; a single charge ensures 50 hours of use at least.Tested and Guaranteed: Favero Electronics produces in-house each Assioma and thoroughly test it individually: fully satisfying the standards required by current regulations.Buy Favero Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Ultegra R8170 Di2 12 Speed Disc Brake - Black - Left Rear}, Black
  • £449.99

Shimano Ultegra R8170 Di2 12 Speed Disc BrakeThe Ultegra R8170 Di2 12 Speed Disc Brake from Shimano is compatible Shimano Di2 electronic drivetrain systems and Servo Wave hydraulic disc brakes. This brake system offers exceptional comfort and easy-to-use ergonomics with lighter and smoother brake lever action and exceptional gear shifting accuracy in all weather conditions.Road riding has never been this much fun. That's because the redesigned Ultegra ST-R8170 Dual Control Levers have all-new ergonomics, even more precise brake modulation, and wireless electronic shifting. This trifecta lets you focus on the next sprint, the next descent, or the next joke from your riding partner. Shimano's new Ultegra ST-R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven Servo Wave technology. The all-new Di2 platform, used on both Dura-Ace and Ultegra, untethers the shifters while delivering the world's fastest, most reliable wireless shifting. Your time on the bike is precious, let Shimano make it even better. Servo Wave Precise Braking ControlWhen 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 control. 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. Features: Clean Cockpit: Electronic connection enhances the aerodynamic effect and ensures easy maintenance Unparalleled ergonomics engineering refined with pros' feedback Raised hood peak improves ergonomics Optimised brake control Lighter, smoother lever action Enhanced modulation thanks to an expanded braking control area Compatible with wired and wireless connection Available for use with additional satellite shifters High electronic energy efficiency 1.5 to 2 years of battery life with easy-to-change CR1632 shifter batteriesA 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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Stages Cycling Power G3 Carbon Left Arm Only Power Meter
  • £455.00

The Stages Power L meter is built to the proprietary Stages Power carbon left crank arm. The full carbon fiber Stages Power meter and crank arm is compatible with many SRAM GXP or BB30 cranks.The new Stages Power meter is slimmer, and up to 28-percent lower profile than our original meter. It's sleeker by way of a 17-percent reduction in frontal area, and we've also made it stronger. The new housing design increases the strength of the battery door and housing connection by 200-percent over the previous design.Specifications:Stages Power L Accuracy: ± 1.5% (Compared with Generation 2 Accuracy: ± 2%),Power Meter Housing: New low profile design, with new door interface,Weight: Only adds 20gr to base crank arm,Battery Life: 200+ hours (coin cell: CR2032),Power Range (Watts): 0 to 2500,Cadence Range (rpm): 20-220,Water Resistance Rating: IPX7,Frame Compatibility: Most frames, see fit guide in our Support section,Device Compatibility: ANT+, Bluetooth Smart Ready,Software Compatibility: Stages Link, Training Peaks, Strava, Garmin Training Center and others,Tool free battery replacement,Active temperature compensation,Accelerometer based cadence measurement,Wireless firmware upgrades.

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Shimano Dura-Ace Di2 R9170 Road Disc Brake - Black - Rear - Left Hand Lever}, Black
  • £459.49
  • RRP £514.99
  • Saving you £11

Shimano Dura-Ace Di2 R9170 Road Disc BrakeThe Dura-Ace R9170 Road Disc Brake combines the Di2 9170 shifters with the Hydraulic 9170 brake calipers for a combination of smooth and speedy shifting with powerful and efficient braking. This kit comes pre-bled and ready to use with shifter, hose, caliper and pads.The 9170 shifters feature an ideal ergonomic shape that is comfortable in the hand and similar in size to mechanical braking versions of the shifter. The shift paddles now also feature a more defined "click" for confidence in shifting and to prevent mis-shifts. E-Tube compatibility means that the shift paddles can be customised to suit the rider.The 9170 shifters now include Synchro-shift technology that automatically moves the rear derailleur when the front ring is changed or moves the front chainring with the rear shifts to optimise chainline and drivetrain efficiency. The 9170 brake calipers have been tuned to perform optimally in road racing conditions. They feature the Shimano Flat Mount system for a sleek and aerodynamic profile and Ice Tech pads for improved heat dissipation.Shifter Features: More controllable and confidence inspiring in race conditions Optimally balanced hydraulic brake system for racing Dedicated brake lever shape, stroke, contact point, stiffness and dedicated shift paddles Lightweight Carbon composite plastic material hood More intuitive, quicker shifting operation More defined click feeling and ergonomic shift lever position Each switch has the option for multi-shift ON or OFF E-TUBE project Ideal ergonomic cover shape with better thickness & tenderness Simple set up and maintenance Easy replace hood cover Customise the shifts to suit your riding style Single or Pair: SingleCaliper Features: Optimally balanced hydraulic brake system for racing Light weight Improved heat dissipation ICE Technologies Freeza Simple set up and maintenance Easy tool access Integrated low-profile caliper design utilises Flat Mount system Easy wheel replacement Wide pad clearance and chamfer of brake pads Easy and clean bleeding process One-way bleeding More controllable and offers better confidence in race conditions Designed as optimum balance of hydraulic brake system for racing purposesA 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 R9180 Di2 TT Disc Brake - Black - Left Rear}, Black
  • £459.99

Shimano Dura-Ace R9180 Di2 TT Disc BrakeThe Dura-Ace R9180 Di2 TT Disc Brake is the ideal aerodynamic Time Trial (TT) hydraulic disc brakes for use with Shimano Di2 electronic drivetrain systems. This aero-optimised hydraulic disc brakes raises the bar for top-tier road race performance.Overcoming the sometimes-complicated cable routing of time trial and triathlon bikes, the Dura-Ace R9180 levers bring the confidence of hydraulic disc brakes to the sleekest bikes in the world. Combined with the plug and play ease of Shimano Di2 electronic shifting, they offer an advantage in any race.Aerodynamic and Ergonomic Smooth Gear Shifting PerformanceOptimum power transmitted with firm grip for a more aerodynamic and better grip feeling. The gear switch button is integrated inside and can be used without needing to change your hand grip. This ensures intuitive shifting control and enables you to maintain a firm grip when shifting through the gear range. Shimano Synchronized Shift System CompatibleA single shifter button on each side of the shifting lever is optimised to function seamlessly with the Shimano Synchronized Shift system. This gear system offers better control and confidence in race conditions and is customisable to fit in the rider's riding style. Plus, each switch has the option for multi-shift ON or OFF. And it's compatible with Shimano E-Tube for internal cable routing for a cleaner cockpit area and stylish aesthetics throughout. Features: Series: DURA-ACE R9150 Series Drivetrain: Shimano Di2 electronic Brake Type: Hydraulic Disc Type: TT/Triathlon DUAL CONTROL LEVER Weight: 99g Brake Fluid: Shimano Mineral Oil Shimano Part Number: Rear: R91802DLR; Front: R91802DRFA 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 ST-R9180 TT STI with Flat Mount Caliper - Left/Rear
  • £459.99

Top of the range, high performance Dura-Ace hydraulic disc brake Di2 TT STI's give you control, modulation and power with minimal effort in all riding conditions 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 gear The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear shifts Full synchronized shifting programable, Synchro shift compatible meaning a single shifter button either side can control both front and rear shifting which can be fully custom tuned to your riding preferences TT STI with one shift button each side Shifters are lightweight thanks to carbon fibre lever blades and carbon composite bracket body Hydraulic brake lever provides excellent stopping power with less effort especially from the hood position Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear Finely tuneable reach adjusters for the levers enable custom fitment for all hands Free stroke adjustment for pad to rotor contact setting Levers are supplied without electrical cables, as these need to be ordered separately to suit

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Campagnolo Super Record EPS 12 Speed Hydraulic Disc Brake Levers - 160mm - Rear Caliper - Left Hand
  • £485.99
  • RRP £514.99
  • Saving you £6

The shape and functionality of the new EPS 12-speed Ergopowers stem from meticulous studies carried out to guarantee the most efficient and effective ergonomics possible. The shape of the updated brake lever with its new 12-speed design is the result of painstaking studies into hand ergonomics carried out in the Campy Tech Lab to ensure that, together with positioning of the downshift lever, the cyclist has an intuitive, practical, comfortable control centre . The Ergopower Super Record EPS DB controls incorporate the AMS (Adjustable Modulation System), which allows setting of the desired mode and reach adjustment to position the brake lever an optimum distance from the handlebar. Multishifting technology, namely the option to change several sprockets with in a single shift is now applied to all the 12-speed cassettes. Cyclists can use the MyCampy app to personalize the new Super Record EPS groupset to shift up or down by a maximum of 11 sprockets with a simple click. Again developed thanks to close collaboration between Campag Tech Lab and pro cyclists sponsored by Campagnolo, Multi-Dome technology has achieved the perfect balance between force used and tactile feedback, allowing cyclists to feel when a gear shifts. The Ergopower controls also offer the cyclist total control over how the transmission works thanks to the MODE button (found immediately behind the downshift lever on both right and left-hand controls). The MODE button lets the cyclist check battery charge, make incremental adjustments to gears or derailleur (even while pedalling) and carry out any kind of diagnostic check. Features & Benefits Comfortable Support: The controls offer good, safe grip when standing pedalling or when leaning high on the handlebars. Quick Shifting: The front and rear derailleurs can be shifted with minimum effort and from any position on the handlebars. Multi-Shifting: An unexpected climb, a sudden sprint: instantly finding the right combination takes no time at all thanks to the multiple action of the controls. Ergonomics: Shaped cushioning and an adjustable brake lever make these controls perfect for any cyclist, regardless of hand size. Technologies One lever-One action: The EPS system CONTROL levers are positioned and act according to the same logic as Campagnolo mechanical gear levers. Multi-Dome Technology: Being able to feel the exact instant when they shift with the rear or front derailleur is crucial for a rider. Waterproof - IP 67: The Campagnolo EPS electronic drivetrain complies with IP67 international standards. Weight: 381g (Ergo Pr)

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Stages Cycling Stages Power G3 Dura-Ace 9200 - Left Only
  • £500.00

The new single-sided Stages Power L meter is built on to a non-drive-side Shimano Dura-Ace R9200 crank arm and is compatible with all Shimano Hollowtech II road drivetrains.

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