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Garmin Rally XC200 SPD Power Meter Pedals
  • £939.00
  • RRP £1059.99
  • Saving you £11

Rally™ power meters are tested to the extreme, so you can ride there too. Designed especially for off-road riders, the dual-sensing Rally XC200 features SHIMANO SPD cleat compatibility and measures total power, cadence and left/right balance. Even monitor how you apply power throughout the pedal stroke.These durable pedals install like any other pedals and are easy to transfer between bikes. Now you can have power whether you ride gravel, cross-country mountain bike or even cyclocross.Instantly see accurate power measurements on your compatible Garmin device (sold separately) or smartphone, and review later on the Garmin Connect™ app. View your data on Strava, TrainingPeaks® and TrainerRoad for further analysis, sharing and more.Key Features:Designed for off-road use, superior pedal design installs like any other pedal and quickly transfers between bikes; compatible with SHIMANO SPD cleats (sold separately),Rally™?XC200 durable dual-sensing power meter measures total power, cadence, left/right balance, seated versus standing, platform centre offset and power phase,Works seamlessly with the Garmin ecosystem to allow for easy software updates via your Garmin watch, Edge® cycling computers or the Garmin Connect™ app on your compatible smartphone,For postride analysis, data sharing, mapping, route planning and more, sync your data with the Garmin Connect™ app* as well as platforms such as Strava and TrainingPeaks®,Train indoors by connecting with the Tacx® Training app and additional third-party platforms, including TrainerRoad and more1,When the seasons change, you can transfer the spindle between Rally™ RK/Rally RS pedal body kits (sold separately), which are also compatible with the Vector™ 3 power meter,Battery life: up to 120 hours .*When paired with your compatible smartphone TrainingPeaks is a registered trademark of Peaksware, LLC.?

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Garmin Rally XC200 MTB Power Meter Pedals - Black, Black
  • £949.99
  • RRP £999.99
  • Saving you £5

Garmin Rally XC200 MTB Power Meter PedalsOffering you accurate, reliable and instant ride data to help you adapt and improve your pedalling performance, the Rally RK200 Pedal Power Meter builds on the technologies of Garmin’s popular Vector 3 series. As easy to install as normal clipless pedals, they adopt the commonly used Shimano Pedalling Dynamics (SPD) cleat system for compatibility with most mountain bike (MTB) shoes.Left and Right Pedalling AnalysisGarmin's Rally power meters are tested to the extreme, so you can ride there too. Designed for road cyclists, the dual-sensing Rally XC200 measures total power, cadence and left/right balance. You can even monitor how you apply power throughout the pedal stroke. These durable power meter pedals install like any other pedals and are easy to transfer between bikes. Now you can have power readings whether you ride gravel, cross-country (XC) mountain bike (MTB) or even cyclocross (CX). ANT+ and Bluetooth ConnectivityThe ANT+ and Bluetooth technology in these smart pedals enables you to instantly see accurate power measurements on your compatible Garmin device (sold separately) or smartphone and review later on the Garmin Connect app. View your data on popular applications such as Strava, TrainingPeaks and TrainerRoad for further analysis, sharing and more. Features:  Rally XC200 dual-sensing power meter measures total power, cadence, left/right balance, seated versus standing, platform centre offset and power phase Installs like any other pedal and quickly transfers between bikes  Superior pedal design installs like any other pedal and quickly transfers between bikes; compatible with Shimano SPD cleats Sleek design provides greater cornering clearance and improved stack height  Fully integrates with Garmin cycling ecosystem for data analysis  Allows for easy software updates via your Garmin watch, Edge cycling computers or the Garmin ConnectTM app on your compatible smartphone For post-ride analysis, data sharing, mapping, route planning and more, sync your data with the Garmin Connect app as well as platforms such as Strava, TrainingPeaks and TrainerRoad When the seasons change, you can transfer the spindle between Rally RS/Rally XC pedal body kits (sold separately), which are also compatible with the Vector 3 power meter Field calibration  Adjustable cleat release tension  Axle Size: Standard 9/16" thread Cleat Type: Shimano SPD (cleats included) Battery Type: LR44/SR44 (x4)  Battery Life: up to 120 hours (with LR44 battery type)  Accuracy: +/- 1.0%  Communication: ANT+ and Bluetooth Box Includes: 2x Rally XC200 power pedals, cleats with 6 degrees of float, documentationBuy Garmin Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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SRAM Red AXS DUB Powermeter Power Meter Chainsets
  • £969.99
  • RRP £1125.00
  • Saving you £14

Equipped with premium DZero power measurement technology, this innovative chainset uses ANT+ and Bluetooth BLE to send accurate readings to your compatible device, allowing you to make the adjustments needed to hit your targets. Comprised of an aluminium chainring and carbon crankarm, this lightweight and reliable 12 speed model features X-Range technology for added strength and durability and a DUB compatible bottom bracket, allowing you to fit it to most frame types.  Held inside the crankarm, the meter gives super-accurate readings to within +/-1.5% while staying protected from bumps, shocks and moisture, making it the ideal training aid for the performance-focused rider.

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SRAM Red AXS D1 Quarq Road Powermeter DUB
  • £969.99
  • RRP £1187.00
  • Saving you £18

In certain disciplines, the single-ring drivetrain reigns supreme. Championing simplicity, strength and durability, the SRAM RED 1 AXS™ power meter meets the demands of triathletes, time trialists and cyclocross racers. The power meter features improved aerodynamics thanks to direct mount aero chainrings with fully integrated power, and the tighter gearing range is perfect for racing and flatter terrains.The SRAM RED AXS™ power meter breaks with tradition — and breaks through to new levels of performance. The power meters are designed with Quarq’s premier DZero™ power measurement technology fully integrated into the crankset. Welcome to the pinnacle of the power meter.Key Features:X-Range™ gearing technology gives you more range and a smoother gear progression, so you’re always in the right gearIntegrated power measurementPower meter is fully integrated into the chainring set for lighter weightPower readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ridePower balance measures left and right legs separatelyImproved front shifting performance for crisp and accurate front shiftsUnique chainring shape results in a lighter weight, stiffer, more durable cranksetIntegrated chainring design significantly reduces weightDZERO™ - Quarq’s next-generation DZero power meter platform is named for the D0 Experiment, one of science’s most accurate and innovative projects to detect subatomic particles moving at the speed of light. With a new measurement circuit, a revised strain gauge design, improved accuracy throughout the pedal stroke, and software advances, DZero represents the state of the art in power meter technology.AXS™ - AXS is SRAM’s new electronic integration platform that connects electronic bicycle components and software. The SRAM AXS App allows riders to see battery status, change component behavior, personalize controls, get maintenance reminders, and update firmware.X-SYNC™ - SRAM X-SYNC 1x chainrings provide the highest level of performance and durability. The SRAM X-SYNC tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC chainrings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC rings are an integral part of the SRAM 1x™ drivetrain. Accept no imitations.CARBON TUNED™ - Strength and stiffness where you need it, lightweight like you want it. Proprietary SRAM carbon lay-up design increases thickness and stiffness at critical stress areas. Tapered, terraced, carbon architecture ensures the greatest weight savings without compromising strength.X-RANGE™ - Road bikes are faster and more capable than ever before, and riders are expanding what’s possible with drop bar bikes. X-Range is gearing for today’s road riding. We completely re-imagined road gearing for wider range, more useful and smoother gear progression, as well as smarter shift settings – enabled by AXS™ App. With X-Range, you’re always in the right gear.Specifications:Speeds: 12Crank arm length: 170mm, 172.5mm, 175mm, 177.5mmBB Compatibility: All SRAM Road DUB BBsChainring Size: 46/33, 48/35, 50/37Bolt Circle Diameter (BCD): Direct Mount (DM)Chainline: 45.0mmBB Spindle Interface: DUBChainring material: AluminumGuard: No GuardCrank arm material: CarbonColor (Crank arm): Natural carbonPower Meter Type: ANT+ and BLE

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Garmin Rally RS200 SPD-SL Power Meter Pedals
  • £969.99

Rally™ power meters are tested to the extreme, so you can ride there too. Designed for road cyclists, the dual-sensing Rally RS200 features SHIMANO SPD-SL cleat compatibility and measures total power, cadence and left/right balance. Even monitor how you apply power throughout the pedal stroke. For single-sensing total power and cadence, check out Rally RS100. These durable pedals install like any other pedals and are easy to transfer between bikes. Instantly see accurate power measurements on your compatible Garmin device (sold separately) or smartphone*, and review later on the Garmin Connect™ app. View your data on Strava, TrainingPeaks® and TrainerRoad for further analysis, sharing and more.Key Features:Superior pedal design installs like any other pedal and quickly transfers between bikes; compatible with SHIMANO SPD-SL cleats,Rally™?RS200 dual-sensing power meter measures total power, cadence, left/right balance, seated versus standing, platform centre offset and power phase,Works seamlessly with the Garmin ecosystem to allow for easy software updates via your Garmin watch, Edge® cycling computers or the Garmin ConnectTM app on your compatible smartphone,For postride analysis, data sharing, mapping, route planning and more, sync your data with the Garmin Connect™ app as well as platforms such as Strava, TrainingPeaks® and TrainerRoad,When the seasons change, you can transfer the spindle between Rally™ RK/Rally XC pedal body kits (sold separately), which are also compatible with the Vector™ 3 power meter,Battery life: up to 120 hours. *When paired with a?compatible smartphone downloaded with the Garmin Connect appTrainingPeaks is a registered trademark of Peaksware, LLC.

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SRAM Red AXS Power Meter - Black - 46/33T}, Black
  • £969.99
  • RRP £1125.00
  • Saving you £14

SRAM Red AXS Power MeterBringing precise and accurate power measurements to a hard-working, efficient crankset, this SRAM and Quarq combination takes your performance to the next level. Housing high-end DZero power measurement technology, this stunning chainring set shifts with ease while sending your statistics straight to your compatible device. Innovative Power Meter and Crankset SystemBluetooth BLE and ANT+ compatible, this hi-tech crankset offers a wide range of gearing and a smooth shifting experience due to its X-Range technology and durable design. However, it comes into its own by keeping you informed of your pedaling output, giving power readings to within +/-1.5% to make sure you are always at the top of your game. Built into the crankarm, the meter is shock-proof, water-resistant and stays super-accurate in any weather. An excellent addition to your training bike or for mid-race analysis, this performance-improving crankset keeps you focused on the finish line. Features: Chainring Material: Aluminium Crankarm Material: Carbon Speed: 12 speed Bottom Bracket Compatibility: All SRAM Road DUB models Mount Type: Direct Mount Chainline: 45mm Bottom Bracket Spindle Interface: DUB Power Meter Connectivity: ANT+ and Bluetooth BLEBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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SRAM Red AXS Power Meter - Black - 50/37T}, Black
  • £969.99
  • RRP £1125.00
  • Saving you £14

SRAM Red AXS Power MeterBringing precise and accurate power measurements to a hard-working, efficient crankset, this SRAM and Quarq combination takes your performance to the next level. Housing high-end DZero power measurement technology, this stunning chainring set shifts with ease while sending your statistics straight to your compatible device. Innovative Power Meter and Crankset SystemBluetooth BLE and ANT+ compatible, this hi-tech crankset offers a wide range of gearing and a smooth shifting experience due to its X-Range technology and durable design. However, it comes into its own by keeping you informed of your pedaling output, giving power readings to within +/-1.5% to make sure you are always at the top of your game. Built into the crankarm, the meter is shock-proof, water-resistant and stays super-accurate in any weather. An excellent addition to your training bike or for mid-race analysis, this performance-improving crankset keeps you focused on the finish line. Features: Chainring Material: Aluminium Crankarm Material: Carbon Speed: 12 speed Bottom Bracket Compatibility: All SRAM Road DUB models Mount Type: Direct Mount Chainline: 45mm Bottom Bracket Spindle Interface: DUB Power Meter Connectivity: ANT+ and Bluetooth BLEBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Garmin Rally RK200 Dual Sided Power Meter Pedals
  • £970.00

Your next power move starts at your pedals. The Garmin Rally Power Meters are designed to seamlessly transfer between bikes to provide advanced cycling dynamics to help you ride more efficiently and improve over time. Rally dual sensing power meters (RK200, RS200 and XC200) measure total power, cadence, left/right balance and where in the pedal stroke you're applying power. What's more, the transferable spindle can be installed in the pedal body kits to keep cyclists riding year-round.Pedal Design: Features a sleek, pod-less design for improved cornering clearance and stack height for smarter ergonomicsSimple Installation: Installs like any other pedal for easy transfer from 1 bike to another - without bike shop assistancePerformance Metrics: Measures total power at +/-1% accuracy and cadenceEcosystem: Fully integrates with the Garmin ecosystem to allow easy data analysis, software or settings updates via compatible Garmin watches, Edge cycling computers, and Garmin Connect. Leverage the power of Garmin Connect to receive training content and get your data where you want it for analysis on 3rd party platforms such as Strava, TrainingPeaks, and TrainerRoadTransferable Spindle: When the seasons change, you can transfer the spindle to Vector 3 or Rally RS/RK/XC pedal body kits (sold separately)Ant+ and Bluetooth Technology: Connect over ANT+ or Bluetooth to your supporting Garmin watch or Edge device. Also supports connections with your popular indoor training application like Zwift or TrainerRoadBattery Life: Up to 120 hours. Easily replaceable LR44/SR44 (x4) or CR1/3N (x2) batteryWeight: RS200: 320 g / RS100: 328 g / RK200: 326 g / RK100: 334 g / XC200: 444 g / XC100: 451 gStack Height: RS and RK: 12.2 mm / XC: 13.5 mmQ Factor: 53 mm (55 mm with supplied 2mm spacers)Cleat Type: RK: Look Keo Rider Weight Limit: 105kg

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Garmin Rally RS200 Dual sensing Power Meter
  • £970.00

Garmin Rally™ RS200 Dual-sensing Power Meter PedalsGarmin Rally RS200 pedals are designed for racers and fitness enthusiasts who require precise pedalling data to improve and evolve on-bike performance in the pursuit of those all-important marginal gains. Easy to install - Garmin pedals fit just like any other clipless pedal and use the tried-and-trusted Shimano Pedalling Dynamics - Superlight cleat system for compatibility with the vast majority of the road shoes on the market today.IMPECCABLY DESIGNED PEDALRally power meters have undergone rigorous testing to ensure total reliability. These sleek pedals install like any pedal with a superior design with sensors housed inside. And they’re quick to transfer between bikes.ADVANCED CYCLING DYNAMICSIn addition to total power and cadence, Rally RS200 measures much more. These metrics help you tailor your training around your specific weaknesses and strengths to help you improve.CLEAT COMPATIBILITYFor a comfortable ride, these pedals are designed with your favourite SHIMANO SPD-SL cleats in mind.TRANSFERABLE SPINDLEFrom road to gravel to cyclocross and much more, keep riding year-round. A transferable spindle can be installed in Rally™ RK road or Rally™ XC off-road pedal body kits (sold separately).BATTERY LIFEMake sure you’re ready for those long rides and training sessions with up to 120 hours of battery life.LEFT/RIGHT BALANCEMeasure power from your left leg versus your right to better see how symmetrically you’re producing power.SEATED VS STANDINGTrack the time you spend in each position and gauge position effectiveness.POWER PHASEGet a clear look at where you’re producing power in the pedal stroke.PLATFORM CENTER OFFSETEnsure proper cleat position by keeping track of where power is applied on the pedal.Rally FamilyBattery type: LR44/SR44 (x4) or CR1/3N (x2)Battery life: up to 120 hoursMaximum rider weight: 105 kgAccuracy: +/- 1%Field calibrationAdjustable release tensionMeasurement location: spindleCommunication: ANT+® and Bluetooth®Rally RS200Weight: 320 gwater resistance.: IXP7Cleat type: SPD-SLQ-factor: 53 mm (55 mm with provided 2 mm washer)Stack height: 12.2 mmIn the BoxRally RS200 pedalsCleat hardware55mm Q-factor washersDocumentation

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Wahoo Wahoo KICKR Power Trainer (v6) with WiFi
  • £999.00
  • RRP £1099.99
  • Saving you £9

With the addition of lightning fast WiFi, KICKR continues to stay ahead of the pack as the smart trainer that gives you the most ways to connect, compete and train indoors.Key Features:+/- 1% power accuracy,Side-to-side movement,Auto-calibration and firmware updates,Virtually silent operation,Measures speed, distance, power and cadence data,NEW - WiFi connectivity for faster, stable data transfer,NEW - ERG Easy Ramp gets you back in action,NEW - Odometer tracks total mileage.Specification:Maximum Power Output: 2200 Watts,Maximum Simulated Grade: 20%,Minimum Simulated Grade: -10%,Product Weight: 47 lb / 22 kg,Drivetrain: Belt Drive,Resistance Type: Electromagnetic,Power Accuracy: +/-1%,Connectivity: ANT+, ANT+ FE-C, WiFi, Bluetooth, Direct Connect,Cassette: Includes 11-speed with 11-28 ratio,Hub Types: 130/135mm QR, 12x142, and 12x148 Thru Axle,Adapters: Includes 130/135mm QR adapter & hub spacer, 12x142/148 adapter & hub spacer, 1.8mm cassette spacer,Maximum Rider Weight: 250 lb / 113 kg.Setup:Includes 11 Speed cassette.,Can switch to accommodate up to 12 Speed,Ready to ride right out of the box..What's In The Box?KICKR,AC Power Adapter,KICKR AXIS Feet - Hard, Medium, Easy,Quick Release Skewer,Drive Side Adapter for 130mm and 135mm QR,Reversible hub spacer for 130mm and 135mm QR,Drive Side Adapter for 12x142 and 12x148 Thru Axle,Reversible hub spacer for Thru Axle,1.8mm Cassette Spacer,Disc Brake Caliper Spacer.Supported Devices:iPhone / iPad: iOS 13 or newer,Android: Please visit our support site to check for Android compatibility.,MacOS: Bluetooth enabled or pair with ANT+ dongle,Windows PC: Bluetooth enabled or pair with ANT+ dongle.Realistic Ride FeelKICKR’s professional-grade high inertia 16lb flywheel and AXIS feet combine to provide an ultra realistic ride feel.Controlled ResistanceWhen connected to your smartphone, tablet, computer or gps bike computer, KICKR automatically sets and adjusts your resistance based on the software or route.Kickr Axis FeetCustomizable cushioned feet respond to tempo and body position changes, mimicking the side-to-side movement experienced riding outdoors.Professional Grade DurabilityRobust steel construction ensures the KICKR stays in place while you crank out the watts and stands up to years of heavy use.Seamless ConnectivityOffering a robust 2.4 GHz Wi-Fi connection, up to 3 Bluetooth Connections, a direct connect port and ANT+/ANT+FE-C compatibility, KICKR smart trainers pair to most devices and applications so you have the most control over your training and ride data.No Limits Training With Wahoo XAll Wahoo smart trainers and smart bikes come with a trial to Wahoo X, giving you immediate access to two completely unique indoor cycling apps through one account.

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Look SRM Exakt Dual Power Meter Road Pedals - Black, Black
  • £999.99
  • RRP £1350.00
  • Saving you £26

Look SRM Exakt Dual Power MeterThis top-tier power meter is engineered for improving your performance as it delivers precision, control and constant progression. It features a reliable carbon body construction which gives it a superior strength to weight ratio as you manage the intensity that comes with adrenaline-fuelled road journeys. Look has also kitted this version out with a sturdy CrMo axle for a rock-solid connection to your crankset, so you can maintain a power pedal stroke with every rotation. Bluetooth L.E. and ANT+ Pedal Power MeterDesigned to be incredibly simple to use, this stunning component captures data using a dual-sided power meter design. This means you can measure every detail of your right and left leg performance to improve your training habits and to help you discover your limits and progress. This dual-sided version also has extra features such as Torque Analysis and Balance which records your power output, maximum and minimum pedal stroke as well as your pedal stroke smoothness. Lithium Ion BatteryAll set for the long-haul, this fantastic model is equipped with a high-quality lithium ion battery for a straightforward charging experience. Unlike traditional power meters, this type enables you to charge it without even removing your pedals from your bike. It does this by using a magnetic connector to charge both of your pedals simultaneously to ensure a battery lift of up to 100 hours once complete. This is the ultimate upgrade for riders who want fast and reliable results. Features: Body Material: Carbon Contact Surface Material: Stainless Steel Axle Material: CrMo Use: Road Pedal Type: Clip-in Power Meter Type: Dual-sided Platform Area Size: 400mm² Platform Width: 64mm Q-Factor: 54.6mm Stack Height: 11.9mm Battery Type: Lithium Ion Battery Life: 100H Connectivity: Bluetooth L.E. and ANT+ Part Number: PEXAKT18915 Weight: 310g (approx)Technologies: Designed To Face The Elements: The pedal waterproofness has been the focus of attention thanks to the integration of new components - double seals system on the inside and end cap on the external - which guarantee the water tightness of the axle line. Answering IPX6 / IPX7 * standard, the EXAKT will allow you to face the worst weather conditions. *IPX6 Powerful water jets / 1 minute per square meter for at least 3 minutes Water volume : 100 litres per minute Pressure : 100 kPa at distance of 3 m. IPX7 Immersion, up to 1m depth Test duration : 30 minutes. Progress and Passion: The greatest victories are the fruit of modest details, slight but steady progress. The EXAKT allows you to measure every detail of your performance, to improve your training habits to help you discover your limits and progress constantly. Equipped with dual Bluetooth L.E. and ANT + compatibility, the EXAKT gives you the choice to record, analyse and share your data. Power: Independent of environmental factors, measuring the power output allows to manage your training effectively, to define your training zone and to follow precisely the evolution of your performances. Cadence: It is the number of pedal strokes you make in one minute. In other words, your speed of execution. Combined with the force you apply on the pedals it gives the power output. Torque Analysis: Measuring left and right torque for each pedal stroke to know maximum and minimum values as well as pedal stroke smoothness. Balance: The balance function available on the DUAL version give you separate power from right and left leg. This is a gain of precision on the analysis of your performance. Analyze - Compare - Share: Track your day-to-day activities, set your goals, and drive the evolution of your performance from the measured data. The SRM PC8 allows you to display values such as power, heart rate, speed, distance, location as well as training metrics such as Training Stress Score, Normalized power and Intensity Factor.Buy Look Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Ultegra R8100 12 Speed Power Meter - Black - 50.34t}, Black
  • £999.99

Shimano Ultegra R8100 12 Speed Power MeterThe Ultegra R8100 12 Speed Power Meter from Shimano is the ideal chainset to track your cycling performance output. It features Hollowtech II crankarms, a Hollowglide outer chainring and an ultra-precise integrated power meter. This top-quality power meter provides 1.5% strain gauge accuracy and up to 300+ hours of battery life, so you can accurately record your power output as you ride. And it's compatible with ANT+ and Bluetooth LE to communicate with your favourite cycling apps and computer software.Offering all the precision and functionality of the 12-Speed Shimano Dura-Ace power meter, the Ultegra FC-R8100-P power meter comes in a more affordable package. Scientific training requires accurate measurement and user-friendliness, and the new Ultegra R8100 power meter has both. Its dual-sided measurement is accurate within 1.5% and zero offset calibration is a quick and easy process. Perhaps most importantly, its long battery life, easy recharge, and ANT+ and BluetoothLE connectivity make using and recording your workouts easier than ever. Bluetooth LE and ANT+ ConnectivityThe Ultegra R8100 Power Meter brings everything a data-driven cyclist could want. Its integrated, waterproof design brings all-weather reliability while delivering accurate information including left/right balance. A rechargeable Li-ion battery is user-friendly and Bluetooth LE and ANT+ connectivity ensure easy setup. Hollowglide Chainring TechnologyHollow 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. The Best 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: Series: Ultegra R8100 Series Integrated, waterproof, and rechargeable Li-ion battery Up to 300+ hours of ride time * Depending on ANT+/BluetoothLE settings Accurate data collection 1.5% strain gage accuracy throughout the entire calibration range * Depending on ANT+/BluetoothLE settings Proprietary strain gauge Possible to start quickly Simple zero offset calibration with switch on the transmitter Active temperature compensation - the software automatically compensates for temperature changes Weight: 769g (52-36T); 758g (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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