Ready for training, this road bike powermeter is equipped with two high-quality carbon crank arms that ensure fantastic stiffness, durability and low weight as you aim to beat your personal performance goals. Quarq has also designed this chassis-only version for compatibility with Shimano Dura-Ace R9100 or Ultegra R8000 chainrings for excellent power delivery and precision on your ride. Thanks to its spider powermeter, this model provides riders with accuracy within 1.5%, measuring both legs for reliable, accurate power analysis. Another highlight is it comes complete with many of Quarq's renowned technologies such as MagicZero, AxCad and OmniCal as well as 10K Temperature Compensation and an IPX7 waterproof rating for reliability and consistency in any weather conditions. Bluetooth and ANT+ Compatible Your riding and training efforts deserve power measurement that reaches the highest standards of accuracy to help you reach personal records. Because without accurate data, you can’t know if you are making the progress you’re aiming for. With Quarq’s DFour power measurement technology that uses Bluetooth and ANT+ connectivity, you’ll have the technology to get real results. Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The Quarq DFour DUB Power Meter is paired with the Quarq DUB Crankarms to pair with your Dura-Ace R9100 or Ultegra R8000 chainrings. A SRAM DUB Bottom Bracket will be required for installation (available separately). Additional Item Top Features: Connectivity: Bluetooth or ANT+ Battery: CR2032 Battery Life: 200-hour battery life, change without tools Waterproof Rating: IPX7 Accuracy: Within 1.5%, measuring both legs Compatible Chainrings: Shimano Dura-Ace R9100 or Ultegra R8000 road chainrings Chainrings Included: No Technologies: DUB: The relationship between bottom bracket spindle and bearing is the core of DUB technology. It’s where stiffness meets durability. Quarq took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle and bottom bracket. It’s this approach to developing a complete system that equals better drivetrain performance. Connectivity: Bluetooth low energy technology and ANT+ wireless data transfer. MagicZero: Automatically checks and recalibrates your power meter as you ride – no need to manually calibrate. AxCad: No cadence magnet required. Battery: CR2032, 200-hour battery life, change without tools. OmniCal: Swap chainrings without affecting accuracy. Accuracy: Within 1.5%, measuring both legs. 10K Temperature Compensation. IPX7 waterproof rating. Manufacturer's Part Number: 00.3018.292.170 Black 170mm 00.3018.292.172 Black 172.5mm 00.3018.292.175 Black 175mm
Garmin Rally XC100 MTB Power Meter PedalsBringing you some of Garmin’s top cycling technologies but at a slightly more affordable price point, the Rally XC100 Pedal Power Meter pedals build on the success of the Vector 3S model. This Shimano Pedalling Dynamics (SPD) compatible pair work with most mountain bike (MTB) shoes on the market and give you single-sided power and cadence data, which you can then double up to get an accurate calculation of your overall output. These pedals are the ideal upgrade for those who want to take their training seriously, in order to see serious results on race day.Single-Sided Pedalling AnalysisGarmin's Rally power meters are tested to the extreme, so you can ride there too. Designed for off-road cyclists, 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 XC100 single-sensing power meter measures total power and cadence Rally XC100 is an affordable power meter with the option to upgrade to a dual-sensing system 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 XC100 power pedals, cleats with 6 degrees of float, documentationBuy Garmin Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Aqua Marina BlueDrive S Power Fin is suitable for any Aqua Marina inflatable paddle board or kayak and lets you explore remote locations with ease. An electric power motor designed to fit almost all types of watercraft with a fin box, it will help you extend your trip and save more energy when fighting against the wind and current. The BlueDrive S Power Fin itself replaces your normal fin and boasts up to 60 minutes of runtime, with a 360-water intake for high performing efficiency. Combined with a waterproof, rechargeable and lightweight Li-ion battery pack, that is connected to the user via a leash, optimum safety is ensured, while the wireless remote control system allows ease of use when you are in the midst of paddling. Additionally, both the Power Fin and battery pack are aeroplane safe, which makes it suitable for water adventures all around the world.
Ready for training, this power meter chainset features two high-quality carbon crankarms, which deliver exceptional stiffness and strength without adding any unnecessary weight to your road bike. SRAM has also equipped this model with a single X-SYNC narrow/wide aluminium chainring for maximum chain control and precision as you beat your personal performance goals. With a powermeter that delivers measurement readings that are accurate within +/-1.5% and aren't affected by climate conditions, you'll enjoy reliable results and performance data whatever the weather conditions. Coming complete with AXS wireless connectivity as well as renowned technologies such as DUB, DZERO, X-range and Exogram, this is a great choice of upgrade for reaching new goals and taking your training sessions up a notch. Road Bike Power Meter with AXS Wireless Technology AXS is SRAM’s bike component integration system that connects electronic bicycle components and software. The SRAM AXS app allows riders to see battery status, change component behavior, personalise controls, get maintenance reminders, and update firmware. Bluetooth and ANT+ Compatible With SRAM's power measurement technology that uses Bluetooth Low Energy (BLE) and ANT+ connectivity, you’ll have the technology to get real results. Your riding and training efforts deserve power measurement that reaches the highest standards of accuracy to help you reach personal records. Because without accurate data, you can’t know if you are making the progress you’re aiming for. Another highlight is the chainring can be easily changed without requiring recalibration of the power meter. Non-aero chainrings can also be installed with a single tool, making gearing changes a breeze. Technologies: - Single-ring drivetrain simplifies functionality. - 48 and 50T variants have fully integrated power into a direct mount aero chainring. - 36-46t variants have a spider-based power. - Chainrings can be easily changed without requiring recalibration of the power meter. - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride. - SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control. - Laser-etched chainring finish is more durable. - DUB bottom bracket adds durability and simplicity. - Non-aero chainrings can be installed with a single tool, making gearing changes a breeze. 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 imitation. AXS: AXS is SRAM’s bike component integration system that connects electronic bicycle components and software. The SRAM AXS app allows riders to see battery status, change component behavior, personalise controls, get maintenance reminders, and update firmware. DUB: The relationship between bottom bracket spindle and bearing is the core of DUB technology. It’s where stiffness meets durability. We took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle and bottom bracket. It’s this approach to developing a complete system that equals better drivetrain performance. DZERO: 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. 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 reimagined road gearing for wider range, more useful and smoother gear progression, as well as smarter shift settings—enabled by AXS. With X-Range, you’re always in the right gear. Exogram: SRAM's Hollow Carbon Construction starts in the crank arm and extends into the crank’s spider, maximizing the stiffness to weight ratio. Manufacturer's Part Numbers: 00.3018.209.170 Black 170mm 50T 00.3018.209.172 Black 172.5mm 50T 00.3018.209.175 Black 175mm 50T 00.3018.210.170 Black 170mm 48T 00.3018.210.172 Black 172.5mm 48T 00.3018.210.175 Black 175mm 48T 00.3018.211.170 Black 170mm 46T 00.3018.211.172 Black 170mm 40T 00.3018.211.175 Black 172.5mm 40T 00.3018.214.170 Black 172.5mm 46T 00.3018.214.172 Black 175mm 46T 00.3018.214.175 Black 175mm 40T
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 TrainerRoadSingle-Sensing: RS100, RK100 and XC100 are the affordable power meter with options to upgrade to the dual-sensing system that provides cycling dynamicsTransferable 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: XC: Shimano SPDRider Weight Limit: 105kg
Rotor Inpower Direct Mount Road CranksetA highly accurate and reliable road crankset with integrated power measurement technology at its core. Whether you're competing, training or wanting to improve your riding, this stunning component provides all the tools you need to take your performance to the next level. Thanks to two sets of opposing gauges in its axle, this model measures your pedalling power in the left leg. As a result, you can view precise data metrics including power output, cadence, torque effectiveness and pedal smoothness. Easily connect to your smartphone or cycling device via Bluetooth Smart or ANT+ and export your data for training analysis with programmes such as TrainingPeaks.com. Thanks to its direct mount technology, a clever spline interface between the crank arm and chainrings provide superior stiffness and direct transfer of your pedalling torque.Long-Lasting Battery-Powered Power Meter CranksWith each charge lasting up to a whopping 300 hours, all powered from a standard AA battery, you'll have more than enough time to improve your pedal stroke performance. Additionally, all of its electronics are housed inside a special sealed water-proof axle for centred rotational weight and maximum device protection.Packed with features and technologies, you can access real-time performance data including Torque 360, Optimum Chainring Angle (OCA) and a recommendation of your Optimal Chainring Position (OCP). Combine this key information with Q RINGS oval chainrings to adjust your OCP in 1 of 5 different positions for fine-tuned pedalling efficiency and maximise transmission of power in your unique pedal rotation.Features: Material: 6082/7075 Aluminium Alloy Bottom Bracket Compatibility: BB30 / PF30 / PF30 BBright / BB386 / BSA / ITA / BB86 Chainline: 43.5 boost Q-Factor: 147.5mm boost Spindle: 30mm Weight: 510g (approx)Buy Rotor Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
A Powerful CombinationPOWRLINK ZERO is built on the cutting-edge Speedplay pedal platform, including the new features that Wahoo brought to the pedals. This includes Dual Sided Entry, 3 Axis Adjustability, Cleat Customization, and Sealed Bearings.Lasting Power & Rechargeable BatteryThe rechargeable battery has up to 75+ hours of life for the longest rides outside. Low power warnings will be displayed on the ELEMNT bike computers, Wahoo Fitness App, and with the LED indicators on the pod.Temperature Compensation + Automatic CalibrationPOWRLINK ZERO provides accurate power within a rangeof temperatures. The pedals automatically callibrate to the ambient temperature at the start of your ride, allowing you to focus on getting out and enjoying your ride.
This power meter pedal features left-sided power measurement, with precise results across a range of temperatures. Thanks to its automatic calibration system, this model calibrates to the ambient temperature at the start of your ride, allowing you to focus on getting out and enjoying wherever your next ride takes you. Another highlight is its long-lasting rechargeable Lithium battery, which delivers up to 75+ hours of life. Wahoo Left Sided Power Meter Pedal Engineered for the demands of modern training sessions on your road bike, this power meter pedal is built on the cutting-edge Speedplay pedal platform, including the updated features that Wahoo brought to the pedals. This includes Dual Sided Entry, 3 Axis Adjustability, Cleat Customisation, and Sealed Bearings. As a result, you'll benefit from quick and easy mounting, personalisation and increased durability in all-weather conditions. With cadence, temperature, automatic calibration and LED indicators, the Wahoo POWRLINK ZERO Left Sided Power Pedal is fully equipped for helping you achieve your next personal best. Additional Item Top Features: Total Power: No Cadence: Yes Temperature: Yes Automatic Calibration: Yes LED Indicators: Yes In The Box: - POWRLINK ZERO pedals (Left-sided only power) - Washer (x2) - Standard Tension Cleats - Charging Cable and Clip - Spacer - Quick Start Guide - Important Product Information Technologies: Lasting Power and Rechargeable Battery: The rechargeable battery has up to 75+ hours of life. Low power warnings will be displayed on the ELEMNT bike computers, Wahoo Fitness App, and with the LED indicators on the pod. Temperature Compensation and Automatic Calibration: POWRLINK ZERO provides accurate power within a range of temperatures. The pedals automatically calibrate to the ambient temperature at the start of your ride, allowing you to focus on getting out and enjoying your ride. A Powerful Combination: POWRLINK ZERO is built on the cutting-edge Speedplay pedal platform, including the new features that Wahoo brought to the pedals. This includes Dual Sided Entry, 3 Axis Adjustability, Cleat Customisation, and Sealed Bearings. Kickr Rollr and POWRLINK ZERO Bundle: Pair POWRLINK ZERO to Kickr Rollr (available separately) for accurate power indoors. The simple set-up makes it easy to transition your ride from outdoors to indoors. Manufacturer's Part Number: WFPRX1L55 Left Sided
Wahoo POWRLINK ZERO Left Sided Power PedalFeaturing left-sided power measurement only, this power meter pedal offers precise results with a range of industry-leading technologies. Thanks to its automatic calibration system, this model calibrates to the ambient temperature at the start of your ride, allowing you to focus on getting out and enjoying wherever your next road bike training session takes you. Another highlight is its long-lasting rechargeable Lithium battery, which delivers up to 75+ hours of life for the longest rides outside.Wahoo Left Sided Power Meter PedalEngineered for the demands of modern training sessions on your road bike, this power meter pedal is built on the cutting-edge Speedplay pedal platform, including the updated features that Wahoo brought to the pedals. This includes Dual Sided Entry, 3 Axis Adjustability, Cleat Customisation, and Sealed Bearings. As a result, you'll benefit from quick and easy mounting, personalisation and increased durability in all-weather conditions.With cadence, temperature, automatic calibration and LED indicators, the Wahoo POWRLINK ZERO Left Sided Power Pedal is fully equipped for helping you achieve your next personal best.Features: Use: Road Power Measurement: Left Sided Power Only Dimensions: 99x51mm Q-Factor: 55mm Stack Height: 13mm Bearings: Sealed Bearings Battery Type: Rechargeable Lithium battery Water Resistance: IPX7 Total Power: No Cadence: Yes Temperature: Yes Automatic Calibration: Yes LED Indicators: Yes Single or Pair: Pair Weight: 250gIn The Box: Powrlink Zero pedals (Left-sided only power) Washer (x2) Standard Tension Cleats Charging Cable and Clip Spacer Quick Start Guide Important Product InformationTechnologies: Lasting Power and Rechargeable Battery: The rechargeable battery has up to 75+ hours of life for the longest rides outside. Low power warnings will be displayed on the ELEMNT bike computers, Wahoo Fitness App, and with the LED indicators on the pod. Temperature Compensation and Automatic Calibration: Powrlink Zero provides accurate power within a range of temperatures. The pedals automatically calibrate to the ambient temperature at the start of your ride, allowing you to focus on getting out and enjoying your ride. A Powerful Combination: Powrlink Zero is built on the cutting-edge Speedplay pedal platform, including the new features that Wahoo brought to the pedals. This includes Dual Sided Entry, 3 Axis Adjustability, Cleat Customisation, and Sealed Bearings. Kickr Rollr and Powrlink Zero Bundle: Pair Powrlink Zero to Kickr Rollr (available separately) for accurate power indoors. The simple set-up makes it easy to transition your ride from outdoors to indoors.Manufacturer's Part Number: WFPRX1L55 Left SidedBuy Wahoo Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Race Face Race Face Cinch Power Meter SpindleThe perfect training companion for avid enduro and cross country riders, this discrete power meter sits inside your bottom bracket, measuring your pedal and cadence data as you seek the best possible form. Kept safe by your BB shell, the Cinch uses Bluetooth and ANT+ to relay data to the Cinch Power Meter App for iPhone or Android, letting you analyse and adapt your run in real time. Compatible with a variety of cranksets, this is a superb performance-enhancing gadget. Features: Power Accuracy: +-/2% Measurements: Cadence, pedal efficiency Connectivity: Dual Bluetooth low energy technology and ANT+ Battery Life: Over 400h, USB rechargeable Compatibility: 1x or 2x configurations App: Cinch Power Meter App for iPhone or Android Fits: Next SL G4, Next G3, Next R, Turbine Size: BSA 68/73mm, BB92/89, PF30 68/73mm Weight: 65g Buy Race Face Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Designed to sit discreetly inside your bottom bracket shell, this high-quality power meter uses Bluetooth and ANT+ technology to relay your riding data right to your compatible device for instant, mid-ride analysis. Taking note of your cadence and pedal efficiency, this Cinch model works with 1x or 2x configurations and fits a wide range of cranksets for ultimate versatility and adaptability. Working in tandem with the Cinch Power Meter App for iPhone or Android, it comes with a USB-rechargeable battery for hundreds of hours of use, making it the ideal training partner for the performance-focused rider.
Favero Assioma DUO-Shi Power MeterThis high-quality power meter is engineered for accuracy and consistency, whether you're training for an event or trying to beat your personal performance goals. It features an aerospace aluminium alloy construction, which makes it tough and dependable as you tackle every mile of road. Favero has also ensured that each power sensor is protected by a bi-component resin block that's extremely resistant to shocks and completely waterproof. Another highlight is it's simple to install and move from one bike to another just like your normal pedals. You can do it easily and without extra tools or the need for a mechanic.Dual-Sided Power MeasurementSpecifically designed for use with Shimano pedal bodies, this model is compatible with Shimano PD-R8000, PD-R7000, PD-6800, PD-R550 and PD-R540. It features power sensors for your right and left pedal to offer real dual-sided power data by measuring power individually for both legs. This makes it possible to observe with accuracy not only Total Power, but also L/R Balance, Torque Effectiveness (TE), Pedal Smoothness (PS), etc. Assioma also guarantees accurate and consistent data in all conditions on the road, and at any temperature ranging from -10°C and 60°C, thanks also to the Automatic Temperature Compensation (ATC).Unlike others, the measurement of Assioma is not affected by errors related to very irregular pedalling (e.g. uphill sprints) or the use of oval chainrings. This is because Assioma can detect the actual instantaneous angular velocity during the whole pedal stroke, thus providing ±1% accuracy in any conditions. Not only in the lab.Bluetooth and ANT+ ConnectivityAssioma communicates with bike computers and smartphones (both Android and iOS) via Bluetooth and ANT+. Assioma is the only pedal-based power meter for road with integrated rechargeable batteries; a single charge ensures at least 50 hours of use.Please note: Compatible Shimano pedal bodies are sold separately. (Shimano PD-R8000, PD-R7000, PD-6800, PD-R550 and PD-R540).Features: Material: Aerospace Aluminium Alloy Use: Road Power Meter Type: Power sensors for right and left Shimano pedal bodies Power Measurement: Dual-sided power measurement Compatible Pedal Bodies: Shimano PD-R8000, PD-R7000, PD-6800, PD-R550 and PD-R540 Cadence Sensor: Included, inbuilt Gyroscope: Included, inbuilt Power Calculation System: Power calculation system IAV Cycling Dynamics: Yes Oval-Chainring Compatible: Yes Battery Type: Rechargeable lithium battery Battery Life: At least 50 hours Radio Communication: Bluetooth v4.0, ANT+ PWR profile (CT + PO) Accuracy Power Measurement: ± 1% Temperature Compensation: -10°C / +60°C Waterproofness Rating: IP67 Q-factor With: PD-R7000/R550/R540: +64 mm; PD-R8000/6800: +65 mm Manufacturer's Warranty: 2 years Pedal Bodies Included: No, sold separately Single or Pair: Pair Made in Italy Weight of Assioma DUO-Shi without Pedal Bodies: 99g per side (battery included) Weight of Assioma DUO-Shi with PD-R8000 Pedal Body: 157g per side (battery included)In The Box: Left power sensor with adapter for Shimano pedal bodies. Right power sensor with adapter for Shimano pedal bodies. Battery charger including plugs (EU, US, UK, AU). 2 two-meter long micro-USB/USB cables with 2 magnetic connectors. Hex key and 4 washers for the installation. Assioma user manual. Assioma DUO-Shi user manual.Technologies: Designed for the compatibility with Shimano road: Assioma DUO-Shi has been designed for Shimano road users, as it offers the opportunity to keep on riding with your current Shimano pedal bodies* without giving up on the trustability and precision of Assioma. Installation into your own Shimano pedal bodies: Installing Assioma DUO-Shi into your own compatible Shimano pedal bodies* is simple and quick. Compatible Shimano pedal bodies: Assioma DUO-Shi is compatible with the following Shimano pedal bodies: PD-R8000, PD-R7000, PD-6800, PD-R550 and PD-R540. Increased Q-factor?: The Q-factor of Assioma Look version is of +54mm, whereas that of Assioma DUO-Shi measures +64mm with the PD-R7000/R550/R540 pedal bodies and +65mm with the PD-R8000/6800. Despite an initial concern related to the increase of the q-factor, we decided to proceed with the project considering that body size (height, pelvis width, etc.) is a subjective factor contributing to determining which is the best q-factor for each one of us. A final, positive feedback from our beta testers has eventually validated the product. Easy to install: Install and move your Assioma from one bike to another just like your normal pedals. You can do it easily and without extra tools or the need for a mechanic. IAV Cycling Dynamics: Assioma provides advanced metrics called IAV Cycling Dynamics: IAV Power Phase and IAV Rider Position. These metrics, combined with the classic power data permit you to analyze in detail your pedaling technique and how your position on the bike influences performance. IAV Power and gyroscope: Unlike others, the measurement of Assioma is not affected by errors related to very irregular pedaling (e.g. uphill sprints) or the use of oval chainrings. This is because Assioma can detect the actual instantaneous angular velocity during the whole pedal stroke, thus providing ±1% accuracy in any conditions. Not only in the lab. Bluetooth and ANT+: Assioma communicates with bike computers and smartphones (both Android and iOS) via Bluetooth and ANT+. Real dual-sided power data: Assioma DUO-Shi measures power individually on both legs; this makes possible to observe with accuracy not only Total Power, but also L/R Balance, Torque Effectiveness (TE), Pedal Smoothness (PS), etc. Accuracy and consistency: Assioma guarantees accurate and consistent data in all conditions on the road, and at any temperature ranging from -10°C and 60°C, thanks also to the ATC (Automatic Temperature Compensation). Waterproof and resistant: The power sensors are protected by a bi-component resin block, extremely resistant to shocks and completely waterproof. Rechargeable and green: Assioma is the only pedal-based power meter for road with integrated rechargeable batteries; a single charge ensures at least 50 hours of use. Tested and guaranteed: Favero Electronics produces every power meter in-house and tests each of them thoroughly to fully satisfy the standard required by current regulations.Manufacturer's Part Number: 772-02-S Black/Grey Dual Side Sensor ShimanoBuy Favero Components from Chain Reaction Cycles, the World's Largest Online Bike Store.