Offering simplicity, strength and durability, this chainring powermeter kit meets the demands of competing time trial and triathlon riders. It features a robust aluminium construction that's also CNC-machined, so riders can benefit from its fantastic strength to weight ratio on every training session. SRAM has integrated the powermeter into this direct mount chainring, so you can enjoy its tighter gearing range that's perfect for racing and areas with flatter terrain. Coming equipped with Quarq DZero power measurement, you'll also enjoy its accurate readings within +/-1.5% that aren't affected by climate conditions during a ride. - AXS enabled for easy monitoring and firmware upgrades - Single-ring drivetrain simplifies functionality - Fully integrated power meter into a direct mount aero chainring - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Power balance measures left and right legs separately - SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control - Laser-etched chainring finish is more durable - 8-bolt direct mount compatibility only to new RED and Force eTap AXS cranks Technologies: AXS: AXS is SRAM's bike component integration system that connects electronic bicycle components and software. This SRAM AXS app allows riders to see battery status, change component behaviour, personalise controls, get maintenance reminders and update firmware. X-SYNC: SRAM X-SYNC chain rings 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™ chain rings 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. DZERO: The Quarq platform for powermeters, DZero, is certified according to the DZero experiment, one of the most accurate and innovative Projects of science to study subatomic particles moving at the speed of light. With a new measuring circuit, a revised DMSDesign, improved accuracy throughout the entire Pedal rotation and software progress represented DZero represents the state of the art in power measurement technology.
Whether you're training for an event or wanting to achieve personal performance goals, this powermeter spider is designed for precise and reliable results using proven SRAM technologies. Ready for training, it features a hard-wearing aluminium construction for extra toughness and durability on your road bike. SRAM has also put this model through a CNC-machining process to shave off any excess material, while still maintaining its strength. As a result, riders will enjoy its smooth and dependable performance without any weight penalty. With power readings that are accurate within +/-1.5% and aren't affected by climate conditions during a ride, this is a great choice of upgrade for taking your training sessions up a level. AXS Enabled Powermeter Spider 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 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 SRAM's power measurement technology that uses Bluetooth Low Energy and ANT+ connectivity, you’ll have the technology to get real results. 200 hours of Ride Time You are working hard, pushing yourself to new heights in some of the toughest conditions. Ride with confidence knowing that your power meter will not quit when you need it the most. Enjoy up to 200 hours of ride time in any weather conditions with its IPX7 waterproof rating and 10k temperature compensation; if harsh climates do not hold you back, then you need a product capable of rising to the occasion. That is exactly what the SRAM AXS Powermeter Spider is made for. Train harder, ride faster and unlock your ultimate potential. Please note: This product includes the SRAM AXS Powermeter Spider only. Cranksets and chainrings are available separately. Technologies: - AXS™ enabled for easy monitoring and firmware upgrades. - Bluetooth Low Energy and ANT+ compatible. - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride. - Uses a common CR2032 battery that lasts for 200 riding hours and changes without tools. - Power-upgrade compatible with the following RED® and Force eTap AXS™ cranksets: RED 1x: 36T-46T, Force 1x: 36T-46T, Force 2x: 33/46, 35/48. Manufacturer's Part Number: PMQS8229000 Grey 107 BCD
Quarq DFOUR DUB Powermeter SpiderThis spider powermeter is developed to help you reach new goals and explore new roads, delivering accuracy, durability, and reliability on every training mile. The DFour DUB is designed specifically for Dura-Ace R9100 chainrings. Train using a Quarq power meter without changing your drivetrain. You are working hard, pushing yourself to new heights in some of the toughest conditions. Ride with confidence knowing that your power meter will not quit when you need it the most.Up To 200 Hours Ride TimeEnjoy up to 200 hours of ride time in any weather condition with its IPX7 waterproof rating and 10k temperature compensation; if harsh climates do not hold you back, then you need a product capable of rising to the occasion. That is exactly what the DFour DUB power meter is made for.MagicZero Automatic CalibrationTrain harder, ride faster and unlock your ultimate potential. The DFour DUB power meter brings simplicity and ease of use to your training. With MagicZero automatic calibration, there is no need to worry about calibrating before you ride; just jump on your bike and go. DFour DUB features Bluetooth low energy and ANT+ wireless data transfer, delivering power output information directly to your cycling computer.Powermeter Spider with DUB TechnologyThe 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.Please note: Compatible bottom brackets, crank arms, chainrings are sold separately.Features: Use: Road Speed: 11 speed Bolt Circle Diameter (BCD): 110 BCD Bottom Bracket (BB) Compatibility: All SRAM Road DUB BBs (Bottom Brackets are available separately) BB Spindle Interface: DUB Chainring Compatibility: Dura-Ace R9100 chainrings Guard: No Guard Not Included: Bottom bracket, crank arms, chainrings are available separatelyTechnologies: 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. 10K Temperature Compensation. Battery -- CR2032, 200-hour battery life, change without tools. OmniCal -- swap chainrings without affecting accuracy. 2-year manufacturer's warranty. IPX7 waterproof rating. Accuracy -- within 1.5%, measuring both legs.Manufacturer's Part Numbers: PMQ268002 Black No BB/C'Ring/Arm 110 BCDBuy Quarq Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Quarq DZero DUB Powermeter SpiderThis powermeter spider is engineered for precise results and dependable performance, whether you're training for an event or trying to push yourself to reach new goals. Feature-packed with many of Quarq's finest technologies as well as ANT+ and Bluetooth Low Energy (BLE) connectivity, it allows for your data to be transferred wirelessly. Another highlight is its MagicZero technology, which automatically checks and recalibrates your power meter as you ride, so there's no need to manually calibrate. Measuring accuracy within 1.5% for both legs, it also has an IPX7 waterproof rating for training in all-weather conditions.Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The Quarq DZero DUB is built with broad compatibility and will work with most 10 speed and 11 speed chainrings. Build the power meter that best fits your bike with multiple bolt circle diameter (BCD) options available to choose from as well as compatible crank arms, chainrings and bottom brackets available separately.DUB TechnologyThe 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.DZeroQuarq'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.Please note: This product includes the powermeter spider only. Compatible crank arms, chainrings and bottom brackets are available separately.Features: Use: Road Speed: 11 speed Power Meter Type: ANT+ and Bluetooth Low Energy (BLE) Bolt Circle Diameter (BCD): Multiple options to select from the drop down menu Bottom Bracket (BB) Spindle Interface: DUB (bottom brackets sold separately) Bottom Bracket Compatibility: All SRAM Road DUB BBs Not Included: Crank arms, chainrings and bottom brackets available separately Guard: No guardTechnologies: 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. 10K Temperature Compensation. Battery - CR2032, 200-hour battery life, change without tools. OmniCal - swap chainrings without affecting accuracy. 2-year manufacturer warranty. IPX7 waterproof rating. Accuracy - within 1.5%, measuring both legs.Manufacturer's Part Numbers: PMQ268000 Black No BB/C'ring/Arm 130BCD PMQ268001 Black No BB/C'ring/Arm 110BCDBuy Quarq Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
FSA Powerbox SC POD Powermeter CranksetThe FSA Powerbox SC POD Power Meter is a highly accurate and beneficial training device to help you improve your race-day performance. Compatible with Shimano and SRAM 10 and 11-Speed groupsets, this durable and ultra-precise power meter crankset records your power output thanks to its virtual left and right balance while also being compatible with Zwift training cycling software.The Powerbox SC POD power meter is the next step in FSA's power meter offering. Featuring virtual L/R balance to estimate total power more accurately it is Zwift compatible via BLE5.0 and has a 450H battery life (it uses a single CR2450 battery).With a precision of more than 99%, this quality power meter gives you accurate power readings. Nowadays, power meter cranks represent a fundamental tool that will help riders track their data directly during training sessions and to be increasingly more competitive on race day. Features: Material: Alloy, Cold forged AL6061/T6 Aluminium crank, 30mm AL7050 BB386EVO spindle, AL7075 100% CNC chainrings Type: Powermeters Bottom Bracket: BB386EVO Discipline: ROAD Bolt Circle Diameter (BCD): 120/90; BCD 120/90 mm, CL:45mm, QF:149mm Drivetrain Compatibility: Shimano10/11S, Sram10/11S Fits Shimano and SRAM 11 speed systems Length: 145, 150, 155, 160, 165, 167.5, 170, 172.5, 175mm Pod Weight: 20g (w/ CR2450) Weight: 793 grams (46/30Tx170mm)Manufacturer's Part Numbers: 328-0016743090Buy FSA Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
FSA Powerbox SC POD Powermeter CranksetThe FSA Powerbox SC POD Power Meter is a highly accurate and beneficial training device to help you improve your race-day performance. Compatible with Shimano and SRAM 10 and 11-Speed groupsets, this durable and ultra-precise power meter crankset records your power output thanks to its virtual left and right balance while also being compatible with Zwift training cycling software.The Powerbox SC POD power meter is the next step in FSA's power meter offering. Featuring virtual L/R balance to estimate total power more accurately it is Zwift compatible via BLE5.0 and has a 450H battery life (it uses a single CR2450 battery).With a precision of more than 99%, this quality power meter gives you accurate power readings. Nowadays, power meter cranks represent a fundamental tool that will help riders track their data directly during training sessions and to be increasingly more competitive on race day. Features: Material: Alloy, Cold forged AL6061/T6 Aluminium crank, 30mm AL7050 BB386EVO spindle, AL7075 100% CNC chainrings Type: Powermeters Bottom Bracket: BB386EVO Discipline: ROAD Bolt Circle Diameter (BCD): 120/90; BCD 120/90 mm, CL:45mm, QF:149mm Drivetrain Compatibility: Shimano10/11S, Sram10/11S Fits Shimano and SRAM 11 speed systems Length: 145, 150, 155, 160, 165, 167.5, 170, 172.5, 175mm Pod Weight: 20g (w/ CR2450) Weight: 793 grams (46/30Tx170mm)Manufacturer's Part Numbers: 328-0016743090Buy FSA Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
4iiii XTR M9020 Left Arm PowermeterMeasuring your pedal power and cadence with super-accuracy, this lightweight crank-integrated meter sends your outputs to your wireless compatible device for instant analysis and adjustments to your form. Innovative, Onboard Power and Cadence MeterDesigned especially for use with Shimano XTR M9020 cranksets, it utilises its ANT+ and Bluetooth connectivity to relay your riding information directly to your smartphone or onboard computer, giving measurements to within +/-1%, allowing you to make performance-improving adjustments in the blink of an eye. Coming with an impressive 100+ hours of battery life and an IPX7 waterproof rating for year-round use, this is a fantastic fixture for the performance-focused cyclist. Features: Accuracy: Measures to within +/-1% Crankset Compatibility: Shimano XTR M9000 Wireless Connectivity: ANT+, Bluetooth Dimensions: 37.7x27.6x7.5mm Power Range: 0-4000w Cadence Range: 30-150rpm Waterproof Rating: IPX7, IPX5 Battery: CR2032 Lithium Ion coin cell, 100+ hours Module Weight: 8g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
4iiii Precision XT M8100 Left Arm PowermeterSpecifically designed for road cycling and gravel adventure riding, this powermeter is engineered for reliable results, whether you're preparing for your next event or want to beat personal performance goals. Coming housed within a Shimano XT M8100 left-sided crankarm, it offers straightforward installation when pairing it with your crankset. 4iiii has also equipped this model with technologies including 3D Power Measurement, Dual Channel ANT+ and Bluetooth Smart wireless connectivity as well as an industry-leading +/- 1% accuracy. This makes it a perfect choice for a wide range of performance-focused riders who want to improve their game and boost their training routine.Used to pace attacks up the Alpe D'Huez in the Tour de France and to hammer on the Queen K during the Ironman World Championships, the Precision Powermeter delivers industry-leading accuracy and reliability when you need it most. Through 4iiii's patented 3D Strain Gauge technology, you can be assured that the data you depend on will help lead you to your own Yellow Jersey.Packaged into a durable lightweight design and compatible with ANT+ and Bluetooth Smart headunits, Precision will help you train harder and smarter.A Ride Ready Precision includes and comes preinstalled on a brand-new Shimano XT M8100 left-sided crank arm. This crank arm will fit bottom brackets using the Hollowtech II interface.Features: Use: Mountain Bike (MTB) Crankset Compatibility: Shimano XT M8100 Accuracy: +/- 1% Connectivity: Dual Channel ANT+ and Bluetooth Smart Power Range: 0-4000W Cadence Range: 30-150RPM Communication Protocols: ANT+, Bluetooth Operating Temperature: 0 to 50°C (32-122°F) Storage Temperature: -20 to 50°C (4-122°F) Battery Type: CR2032 lithium ion coin cell Battery Life: 100+ hours Waterproof Rating: IPX7, IPX5 Length: 37.7mm (1.5in) Width: 27.6mm (1.1in) Depth: 7.5mm (0.3in) Single or Pair: Single left arm powermeter only Module Weight: 9g (0.3oz)Technologies: 3D Power Measurement: When you put force through your pedals or crank, it doesn't just bend the crank - it twists and flexes in all 3 dimensions. 4iiii's patented 3D power measurement system measures this multidimensional strain, so you can be confident that your unique pedal stroke is still measured accurately no matter your riding conditions. Industry Leading Accuracy: 4iiii's +/- 1% accuracy isn't just a claim, it's been third party tested and validated by leading scientists and the Locomotion Lab at the University of Colorado. You can plan your training, pacing, and racing with confidence knowing that your data is always going to be consistent. Don't limit your potential with unreliable data. Want to learn more? Read the whole whitepaper! Dual Channel ANT+ and Bluetooth Smart: 4iiii Powermeters communicate their measurements over both the widely-used ANT+ and Bluetooth Smart radio standards, letting you read and record your power numbers on an enormous catalog of headunits, sportswatches, smartphones, and computers. Communication Compatibility: 4iiii Precision power meters use both the ANT+ PWR and Bluetooth Smart Cycling Power Service standards, which makes them compatible with nearly every headunit, smartphone, or computer you wish to connect to. Check your recording device documentation for ANT+ PWR or Bluetooth Smart (also called BLE, BTLE, or BT4.0) Cycling Power Service capability. Indoor Training: If the weather or climate make riding outdoors tough, your 4iiii Precision powermeter can be used with all popular indoor-training apps, such as Zwift, TrainerRoad, TheSufferFest, Rouvy, and more. Simply use your favourite app's connection procedure over ANT+ or Bluetooth Smart, put your bike on a trainer, and get riding! 3 Year Manufacturer's Warranty: 4iiii Powermeters are waterproof, durable, and designed to be accurate and precise even in the harshest conditions. Because of this, 4iiii are happy to offer an industry-leading 3-year warranty. Ridden through rain storms at Strade Bianche, mud filled cross country mountain bike races, and even tested amidst the salt spray of the ocean on Oracle Team USA's America's Cup competitors, you can be assured that your 4iiii Powermeter will be as tough as you are and is backed with an industry-leading 3-year warranty. All 4iiii Powermeters are IPX7-rated for water immersion up to one meter and backed with an industry-leading 3-year warranty. In The Box: Once your ride-ready Precision powermeter arrives, it just needs to be installed on your bike using the standard Shimano crank installation process. Connect a headunit or computer, and you can start riding with power!Manufacturer's Part Numbers: PML100-S5B00A Black 170mm PML100-S5D00A Black 175mmBuy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
FSA Powerbox SC POD Left Crankarm Power meterThe Powerbox SC POD Left Crankarm Power meter is a highly accurate power meter housed in a left-side crank arm that can be used with any chainset. Compatible with 386EVO bottom brackets, this power meter offers 1% accuracy and provides a left-right-hand side power calculation to total power measurement. It is designed to work with Bluetooth BLE5.0, it supports Zwift and is powered by a CR2450 cell battery.Features: Material: Cold forged AL6061/T6 aluminium crank Power meter left hand arm can be used with any chainset 1% accuracy and virtual L/R balance BLE/ANT compatible IPX7 waterproof Automatic temperature compensation Strain gauges made in Japan High accuracy resolution Bottom Bracket Type: 386EVOManufacturer's Part Numbers: 340-0108003090Buy FSA Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
4iiii 105 7000 PRECISION 3.0 PowermeterThis high-quality 4iiii powermeter comes factory installed into a Shimano 105 7000 left-sided crank arm, making it ready for your next road bike training ride. Providing an ultra-precise +/- 1% accuracy with an impressively light 9g weight, it is fully equipped to help you achieve your performance goals and get the best out of every training session. Benefitting from a lightweight crank arm design that is optimised for maximum power-transfer efficiency without sacrificing stiffness, it delivers smooth and consistent rotative performance as you clock up the miles on your road bike.At 5.5mm high, this Precision 3.0 powermeter is compatible with almost every bike frame on the market. In addition, the indicator light will let you know when your power meter is on, performed a successful zero-offset, and is ready for its battery to be changed. With 800 hours of battery life from its long-lasting coin cell battery, the 4iiii Shimano 105 7000 PRECISION 3.0 Powermeter is all set for taking your training up a notch.Shimano 105 7000 Crank ArmThe Shimano 105 7000 Series is designed to empower more riders than ever before to embrace the sport of road cycling. By combining trickle down technology with a greater accessibility, Shimano 105 continues to motivate and inspire more riders to go after greater challenges.Up To 800 Hour Battery LifeWith up to 800 hours of battery life, you won't have to worry about changing your battery for years to come.+/- 1% AccuracyEveryone has a unique pedal stroke. 4iiii's patented 3D strain gauge measures all forces to deliver precision accuracy.9g Weight4iiii has confirmed that it makes the lightest power meter on the market. The brand is committed to helping you get faster, one gram at a time.Features: Accuracy: +/- 1% Battery Life: Up To 800 hours Battery Type: CR2032 Coin Cell Waterproof Rating: IPx7 Cadence Range: 30 - 170 RPM Power Range: 0 - 4,000 W Height: 5.5mm Operating Temperature: 0 To 50 degrees celsius Connectivity: ANT+, Bluetooth Arm Type: Shimano 105 7000 Single or Pair: Single, left-sided arm Weight: 9gTechnologies: Accuracy in 3D: Not everyone has the perfect pedal stroke. With +/- 1% accuracy, 4iiii is the only crank-based power meter to use 3 strain gauges to measure all forces in your pedal stroke. Ultra Low Profile: With an ultra low profile design, the PRECISION 3 is compatible with more bike frames than ever before. Indicator Light: At a glance, you can now see when your power meter has turned on, performed a successful Zero-offset, or has a low battery. Although, don't expect to see that low battery indicator for a while! Waterproof: Based in the foothills of the Canadian Rockies, we were tired of training tools not designed to work in our tough environment. With an IPX7 waterproof rating you can be assured that your power meter can handle the toughest conditions. ANT+ and Bluetooth: Get the same numbers training inside and outside. The PRECISION 3 Powermeter is both ANT+ and BLE compatible so you can use it on your preferred head unit and favorite indoor training app. 3 Year Warranty: A lot can happen in 3 years. You probably won't need to use it, but it's reassuring to know that all 4iiii Powermeters are backed by an industry leading 3-year warranty.Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
4iiii Dura Ace 9100 PRECISION 3.0 PowermeterPerfect for riders who want to track and improve their performance during their training sessions, this high-quality 4iiii powermeter comes factory installed into a Shimano Dura Ace 9100 left-sided crank arm. Providing an ultra-precise +/- 1% accuracy with an impressively light 9g weight, it is kitted out to help you achieve your performance goals and get the best out of every training ride. At 5.5mm high, this Precision 3.0 powermeter is compatible with almost every bike frame on the market. In addition, the indicator light will let you know when your power meter is on, performed a successful zero-offset, and is ready for its battery to be changed. With 800 hours of battery life from its long-lasting coin cell battery, the 4iiii Shimano Dura Ace 9100 PRECISION 3.0 Powermeter is all set for taking your training to the next level.Shimano Dura Ace 9100 Crank ArmThe Shimano Shimano Dura Ace 9100 crank arm offers system engineering at its peak. Each of the components magnifies in the series provides an unparalleled level of performance. Optimising input to maximise output. That's how it achieves supremacy. The choice of the world's best climbers, sprinters, and time trialists, the Dura-Ace crank drops weight while maximising power transfer. Its design and iconic look are adapted for modern-day road racing.Up To 800 Hour Battery LifeWith up to 800 hours of battery life, you won't have to worry about changing your battery for years to come.+/- 1% AccuracyEveryone has a unique pedal stroke. 4iiii's patented 3D strain gauge measures all forces to deliver precision accuracy.9g Weight4iiii has confirmed that it makes the lightest power meter on the market. The brand is committed to helping you get faster, one gram at a time.Features: Accuracy: +/- 1% Battery Life: Up To 800 hours Battery Type: CR2032 Coin Cell Waterproof Rating: IPx7 Cadence Range: 30 - 170 RPM Power Range: 0 - 4,000 W Height: 5.5mm Operating Temperature: 0 To 50 degrees celsius Connectivity: ANT+, Bluetooth Arm Type: Shimano Dura Ace 9100 Single or Pair: Single, left-sided arm Weight: 9gTechnologies: Accuracy in 3D: Not everyone has the perfect pedal stroke. With +/- 1% accuracy, 4iiii is the only crank-based power meter to use 3 strain gauges to measure all forces in your pedal stroke. Ultra Low Profile: With an ultra low profile design, the PRECISION 3 is compatible with more bike frames than ever before. Indicator Light: At a glance, you can now see when your power meter has turned on, performed a successful Zero-offset, or has a low battery. Although, don't expect to see that low battery indicator for a while! Waterproof: Based in the foothills of the Canadian Rockies, we were tired of training tools not designed to work in our tough environment. With an IPX7 waterproof rating you can be assured that your power meter can handle the toughest conditions. ANT+ and Bluetooth: Get the same numbers training inside and outside. The PRECISION 3 Powermeter is both ANT+ and BLE compatible so you can use it on your preferred head unit and favorite indoor training app. 3 Year Warranty: A lot can happen in 3 years. You probably won't need to use it, but it's reassuring to know that all 4iiii Powermeters are backed by an industry leading 3-year warranty.Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
4iiii RX810 GRX NDS PRECISION 3.0 PowermeterThis ready to ride powermeter comes factory installed into a Shimano RX810 GRX left-sided crank arm, which makes it perfect for gravel adventure riders and road cyclists who want to push their training sessions to the limit for maximum performance gains. Showing off a design that boasts up to 800 hours of battery life, it uses a long lasting coin cell battery to survive the most demanding of training rides across rough, mixed terrain conditions. At 5.5mm high, this Precision 3.0 powermeter is compatible with almost every bike frame on the market. In addition, the indicator light will let you know when your power meter is on, performed a successful zero-offset, and is ready for its battery to be changed. Coming complete with an ultra-precise +/- 1% accuracy and an impressively light 9g weight, this left sided power meter is all set for helping you reach your performance goals.Shimano RX810 GRX Crank ArmShimano GRX, with its gravel-specific ergonomics, optimised gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world. It isn't a reworked set of road components. It represents a ground up look at how cyclists want to explore their world. Shimano GRX helps you eliminate excuses, instead urging you to try that rough sidetrack or ride that little bit longer. It offers you the option to explore beyond.Up To 800 Hour Battery LifeWith up to 800 hours of battery life, you won't have to worry about changing your battery for years to come.+/- 1% AccuracyEveryone has a unique pedal stroke. 4iiii's patented 3D strain gauge measures all forces to deliver precision accuracy.9g Weight4iiii has confirmed that it makes the lightest power meter on the market. The brand is committed to helping you get faster, one gram at a time.Features: Accuracy: +/- 1% Battery Life: Up To 800 hours Battery Type: CR2032 Coin Cell Waterproof Rating: IPx7 Cadence Range: 30 - 170 RPM Power Range: 0 - 4,000 W Height: 5.5mm Operating Temperature: 0 To 50 degrees celsius Connectivity: ANT+, Bluetooth Arm Type: Shimano RX810 GRX Single or Pair: Single, left-sided arm, non drive side (NDS) Weight: 9gTechnologies: Accuracy in 3D: Not everyone has the perfect pedal stroke. With +/- 1% accuracy, 4iiii is the only crank-based power meter to use 3 strain gauges to measure all forces in your pedal stroke. Ultra Low Profile: With an ultra low profile design, the PRECISION 3 is compatible with more bike frames than ever before. Indicator Light: At a glance, you can now see when your power meter has turned on, performed a successful Zero-offset, or has a low battery. Although, don't expect to see that low battery indicator for a while! Waterproof: Based in the foothills of the Canadian Rockies, we were tired of training tools not designed to work in our tough environment. With an IPX7 waterproof rating you can be assured that your power meter can handle the toughest conditions. ANT+ and Bluetooth: Get the same numbers training inside and outside. The PRECISION 3 Powermeter is both ANT+ and BLE compatible so you can use it on your preferred head unit and favorite indoor training app. 3 Year Warranty: A lot can happen in 3 years. You probably won't need to use it, but it's reassuring to know that all 4iiii Powermeters are backed by an industry leading 3-year warranty.Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.