Shimano Dura-Ace R9250 Di2 12 Speed Shifter SetThe Dura-Ace R9250 Di2 12 Speed Shifter Set is a pair of top-quality Dual Control brake/shift levers from Shimano. This lever set is the ideal for use with Shimano caliper rim brakes and Shimano 12-Speed Di2 electronic gear systems. Designed and engineered to ensure all-day riding comfort for long days in the saddle and exceptional gear shifting and outstanding stopping-power. The finest rim brake Dual Control Levers on the market, Dura-Ace ST-R9250 offer 12-speed shifting with refined ergonomics and is exceptionally lightweight. Dura-Ace ST-R9250 Dual Control Levers are the ultimate in reliable performance thanks to a Di2 electronic wired gear connection and lightweight rim brakes. Refined ergonomics and advanced materials show the racing pedigree of these levers. 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. 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: Quick and intuitive shifting Series: Dura-Ace R9200 Series Drivetrain: Shimano Di2 Electronic Speeds: 12-Speed Clearly defined click feeling with the ergonomic shift lever Better bike control and confidence in race conditions Hood shape and texture optimize grip and brake power transmission CFRP* lever CFRP* bracket *CFRP: Carbon fibre reinforced plasticsA 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.
The finest rim brake Dual Control Levers on the market, Dura-Ace ST-R9250 offer 12-speed shifting with refined ergonomics and is exceptionally lightweight. Dura-Ace ST-R9250 Dual Control Levers are the ultimate in reliable performance thanks to a Di2 electronic wired gear connection and lightweight rim brakes. Refined ergonomics and advanced materials show the racing pedigree of these levers. Shimano E-Tube 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. Shimano DCL Dual Control Lever DCL 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.
Perfect for flatter courses and time trials, the Dura-Ace C60 prioritizes aerodynamic efficiency and lateral rigidity. The new hub design, stiffer spokes, and deep-section rim are designed specifically to allow you to push harder in corners and ensure that every bit of your effort is translated into forward motion. Like the entire Dura-Ace wheel family, the new C60 started with a blank slate. Different from the C36 and C50, the C60 has a specific front hub design using Shimano's OPTBAL 2:1 spoke pattern to enhance lateral rigidity. The C60 also receives stiffer spokes, 1.8 mm instead of 1.5 mm. Tested by our professional athletes, this focus on the lateral rigidity of C60 allows you to push harder in corners and when manoeuvring at higher speeds. Lastly, the new wind-tunnel tested, deep-section rims feature a faster, more stable cross-section that time trialists, triathletes, and sprinters alike will enjoy. 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. Shimano E-Thru Axle System The tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15 mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9 mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed.
The all-rounder of the new Dura-Ace wheel lineup, the C50 is both lighter than the previous C40 model and nearly as aerodynamic as the previous C60. It's a wheelset at home in a wide range of conditions. From time trials to criteriums, on rolling terrain or attempting a personal best, the new C50 is the ideal wheel for spirited road riding. The perfect blend of low weight and aerodynamic performance, the all-new Dura-Ace C50 features an updated all-carbon tubeless rim and new hub design that drops weight while enhancing rigidity. 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. Shimano E-Thru Axle System The tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15 mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9 mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed.
Shimano Dura-Ace R9270 C50 Carbon CL Disc WheelThe Dura-Ace R9270 C50 Carbon CL Disc Wheel is Tubeless Ready and features an aerodynamic 50mm-deep-section full carbon rim. Designed and engineered to provide exceptional speed, agility and style, this quality carbon race wheel offers the perfect balance of aerodynamics and crosswind stability at a low weight. And it has a Centre Lock rotor mount for use with disc brakes and the rear wheel is compatible with Shimano HG 11 and 12-Speed cassettes.The all-rounder of the new Dura-Ace wheel line-up, the C50 is both lighter than the previous C40 model and nearly as aerodynamic as the previous C60. It's a wheelset at home in a wide range of conditions. From time trials to criteriums, on rolling terrain or attempting a personal best, the new C50 is the ideal wheel for spirited road riding.The perfect blend of low weight and aerodynamic performance, the all-new Dura-Ace C50 features an updated all-carbon tubeless rim and new hub design that drops weight while enhancing rigidity. 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.Shimano E-Thru Axle SystemThe tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15 mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9 mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed. Features: Series: Dura-Ace R9200 Series All-round tubeless wheels with balanced aerodynamics and lightweight materials 50mm height Full Carbon Rim Internal Rim Width: 21mm Disc Brake Mount: Centre Lock Disc D2 Aerodynamic rim profile Axle System: 12mm E-Thru / Hub Spacing (O.L.D.): Front: 100mm; Rear: 142mm Freehub: Shimano 12-Speed (Compatible only with Shimano road 12-Speed cassette sprockets) Tyre Type: Clincher Tubeless; Recommended Tyre Size: 25-622 - 32-622 Weight: 787g (rear); 674g (front)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.
Shimano Dura-Ace R9270 C60 Carbon CL Disc WheelThe Dura-Ace R9270 C60 from Shimano features a quality full-carbon 60mm-deep Tubeless Ready rim and a Centre Lock disc rotor mount. This wheel is fast, agile and stable, and it's optimised with Shimano D2 Aerodynamic Rim Profiling - it's the ideal wheel design for time trial, triathlon and criterium events. And the rear wheel is compatible with Shimano HG 11 and 12-Speed cassettes.Perfect for flatter courses and time trials, the Dura-Ace C60 prioritizes aerodynamic efficiency and lateral rigidity. The new hub design, stiffer spokes, and deep-section rim are designed specifically to allow you to push harder in corners and ensure that every bit of your effort is translated into forward motion. Like the entire Dura-Ace wheel family, the new C60 started with a blank slate. Different from the C36 and C50, the C60 has a specific front hub design using Shimano's OPTBAL 2:1 spoke pattern to enhance lateral rigidity. The C60 also receives stiffer spokes, 1.8 mm instead of 1.5 mm. Tested by our professional athletes, this focus on the lateral rigidity of C60 allows you to push harder in corners and when manoeuvring at higher speeds. Lastly, the new wind-tunnel tested, deep-section rims feature a faster, more stable cross-section that time trialists, triathletes, and sprinters alike will enjoy. 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. Shimano E-Thru Axle SystemThe tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15 mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9 mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed. Features: Series: Dura-Ace R9200 Series HR: High-Rigidity ver. +20% increased lateral rigidity for powerful riders and sprinters 60 mm height full Carbon rim Internal rim width: 21 mm Disc Brake Mount: Centre Lock Disc D2 Aerodynamic rim profile Axle System: 12 mm E-Thru / Hub Spacing (O.L.D.): Front: 100mm; Rear: 142mm Freehub: Shimano 12-Speed (Compatible only with Shimano road 12-Speed cassette sprockets) Tyre Type: Clincher Tubeless; Recommended Tyre Size: 25-622 - 32-622 Weight: 858g (rear); 751g (front)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.
Stages Cycling Power Meter G3 LR (Dura-Ace R9100)Ridden by three TDF winners and multiple championship winners to victory, Stages power metres have been proven to be able to perform at the most elite level of the sport. This dual-sided power meter provides readings with an accuracy of within +/- 1.5% and can be used with any Shimano road drivetrain.Increased AccuracyStages has built on what it learned when producing its Gen 2 model, by developing the technology even further for increased accuracy of the readings. This model is assembled within Shimano's top-of-the-line Dura-Ace R9100 crankset and measures the individual power output of each leg. Also, each Stages power meter gets individually calibrated to ensure an accuracy that can be trusted by avid amateurs and professionals on the World Tour.Reliable Readings In Any WeatherTo ensure the measurements remain consistent in any weather type, Stages introduced a feature that's never been seen integrated into a power meter before. The feature is “Active Temperature Compensation” and Stages added this technology to account for any sudden temperature changes that you might encounter on your ride. If temperature changes are not accounted for, it can result in false and inaccurate data.Strong ConnectionOther improvements include more powerful Bluetooth and ANT+ transmitters. These improvements ensure the power meter provides a powerful and stable connection with your cycle computer is maintained. Also, thanks to the addition of a more advanced accelerometer, the power meter has a faster sampling rate for more up-to-date feedback on your performance.Features:Accelerometer based cadence measurement Wirelessly upgradable firmware LED indicator displays battery level Updated accelerometer and addition of gyroscope Upgraded BLE and ANT+ radios offer a 6X improvement of data transmission strength Battery Life: 200+ hours (coin cell: CR2032) when used as a single sided meter Power Range (Watts): 0 to 5000 Cadence range (rpm): 10-220 Water Resistance Rating: IPX7Weight: Only adds 20g to base crank armCompatibility: Compatible with all Shimano Hollowtech II road drivetrains Frame Compatibility: Most frames Device Compatibility: ANT+, Bluetooth Smart ready Software Compatibility: StagesLink, Training Peaks, Strava, Garmin Training Centre and othersIn The Box: Power meter High-quality CR2032 coin cell battery Product identification card with serial number and ANT+ I.D. Number user guideBuy Stages Cycling Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Stages Cycling Power Meter G3 LR (Dura-Ace R9100)Ridden by three TDF winners and multiple championship winners to victory, Stages power metres have been proven to be able to perform at the most elite level of the sport. This dual-sided power meter provides readings with an accuracy of within +/- 1.5% and can be used with any Shimano road drivetrain.Increased AccuracyStages has built on what it learned when producing its Gen 2 model, by developing the technology even further for increased accuracy of the readings. This model is assembled within Shimano's top-of-the-line Dura-Ace R9100 crankset and measures the individual power output of each leg. Also, each Stages power meter gets individually calibrated to ensure an accuracy that can be trusted by avid amateurs and professionals on the World Tour.Reliable Readings In Any WeatherTo ensure the measurements remain consistent in any weather type, Stages introduced a feature that's never been seen integrated into a power meter before. The feature is “Active Temperature Compensation” and Stages added this technology to account for any sudden temperature changes that you might encounter on your ride. If temperature changes are not accounted for, it can result in false and inaccurate data.Strong ConnectionOther improvements include more powerful Bluetooth and ANT+ transmitters. These improvements ensure the power meter provides a powerful and stable connection with your cycle computer is maintained. Also, thanks to the addition of a more advanced accelerometer, the power meter has a faster sampling rate for more up-to-date feedback on your performance.Features:Accelerometer based cadence measurement Wirelessly upgradable firmware LED indicator displays battery level Updated accelerometer and addition of gyroscope Upgraded BLE and ANT+ radios offer a 6X improvement of data transmission strength Battery Life: 200+ hours (coin cell: CR2032) when used as a single sided meter Power Range (Watts): 0 to 5000 Cadence range (rpm): 10-220 Water Resistance Rating: IPX7Weight: Only adds 20g to base crank armCompatibility: Compatible with all Shimano Hollowtech II road drivetrains Frame Compatibility: Most frames Device Compatibility: ANT+, Bluetooth Smart ready Software Compatibility: StagesLink, Training Peaks, Strava, Garmin Training Centre and othersIn The Box: Power meter High-quality CR2032 coin cell battery Product identification card with serial number and ANT+ I.D. Number user guideBuy Stages Cycling Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Stages Cycling Power Meter G3 LR (Dura-Ace R9100)Ridden by three TDF winners and multiple championship winners to victory, Stages power metres have been proven to be able to perform at the most elite level of the sport. This dual-sided power meter provides readings with an accuracy of within +/- 1.5% and can be used with any Shimano road drivetrain.Increased AccuracyStages has built on what it learned when producing its Gen 2 model, by developing the technology even further for increased accuracy of the readings. This model is assembled within Shimano's top-of-the-line Dura-Ace R9100 crankset and measures the individual power output of each leg. Also, each Stages power meter gets individually calibrated to ensure an accuracy that can be trusted by avid amateurs and professionals on the World Tour.Reliable Readings In Any WeatherTo ensure the measurements remain consistent in any weather type, Stages introduced a feature that's never been seen integrated into a power meter before. The feature is “Active Temperature Compensation” and Stages added this technology to account for any sudden temperature changes that you might encounter on your ride. If temperature changes are not accounted for, it can result in false and inaccurate data.Strong ConnectionOther improvements include more powerful Bluetooth and ANT+ transmitters. These improvements ensure the power meter provides a powerful and stable connection with your cycle computer is maintained. Also, thanks to the addition of a more advanced accelerometer, the power meter has a faster sampling rate for more up-to-date feedback on your performance.Features:Accelerometer based cadence measurement Wirelessly upgradable firmware LED indicator displays battery level Updated accelerometer and addition of gyroscope Upgraded BLE and ANT+ radios offer a 6X improvement of data transmission strength Battery Life: 200+ hours (coin cell: CR2032) when used as a single sided meter Power Range (Watts): 0 to 5000 Cadence range (rpm): 10-220 Water Resistance Rating: IPX7Weight: Only adds 20g to base crank armCompatibility: Compatible with all Shimano Hollowtech II road drivetrains Frame Compatibility: Most frames Device Compatibility: ANT+, Bluetooth Smart ready Software Compatibility: StagesLink, Training Peaks, Strava, Garmin Training Centre and othersIn The Box: Power meter High-quality CR2032 coin cell battery Product identification card with serial number and ANT+ I.D. Number user guideBuy Stages Cycling Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Building on what it learned with its Gen 2 Version, Stages has developed its technology even further for this latest model. Built on to a Shimano Dura-Ace R9100 crankset, it measures the power output of each of the rider's legs and the crankset is individually calibrated to ensure its accuracy. Stages produce power meters that both avid amateurs and professionals at the top of their game can trust. Reliable Readings In All Conditions To ensure consistency of measurement, Stages introduced a world-first feature to its power meters. This feature is called “Active temperature Compensation” and it is built in as standard to account for sudden temperature changes, which if not accounted for, would result in false and inaccurate data. Stable Connection Stages have made additional improvements to the Bluetooth and ANT+ transmitters and the accelerometer. This ensures a stable and powerful connection with your cycle computer is maintained and a faster sampling rate for more up-to-date feedback on your performance.
VERSATILITY & VALUELight, agile, and comfortable the Endurance AL Disc lends itself superbly to fast-paced rides long or short.The Endurance AL frameset is manufactured from double-butted 6061 Aluminium and combines lightweight with stiffness and durability to produce a frame that will handle whatever type of road riding and weather conditions that you can throw at it. With its mile-eating comfort and race-like performance the aspiring racer, weekend hero and daily commuter can experience that exhilarating ride feel that you only get from a high-end alloy road frameset. Full SpecificationFrame: 6061-T6 Alloy, heat-treated, seamless welds.Colour: Anthracite with white and black accents.Fork: Full carbon fibre monocoque, tapered steerer.Headset: LEVEL 52, 42-52mm, tapered .Brake Fitment: Flat mount disc.Cable Routing: Internal.Front Derailleur Mount: Band-on 31.8mm.Bottom Bracket: Threaded BSA 68mm.Seatpost Diameter: 27.2mm.Seatclamp: 31.8mm.Tyre Clearance: *32mm without mudguards fitted, 25mm with mudguards.Mudguard Compatible. Yes.Thru-Axles: 100/122/M12*P1.5 Front - 142/157/M12*P1.5 Rear.Sizes: XS, S, M, L, XL.Raw Frame Weight: 1680g (med) - Forks 470g +/- 5g.*Tyre profile dependent.
Ridden by the pros, PRECISION PRO dual-side power meters deliver all the benefits of our left-side model (exceptional accuracy, lightweight design, ANT+ and Bluetooth compatibility, 3D powermeter technology), plus a specific breakdown of left and right wattage. Perfect for those who need specific power output from each crank side, or anyone who simply wants the best power meter on the market.Key Features:3D power meter technology (patent pending) measures tri-axial strain on your crank,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,Over-the-air upgrade capability for adding new features and updates,.Specifications:Weight: 25 grams (power meter only),Data accuracy: +/- 1% error margin,Battery life: 100+ hours on 2032 coin cell battery,Battery status indicator: Alert at 15% battery power.