Shimano Dura-Ace R9200 12 Speed Power MeterWith a rechargeable battery and Bluetooth LE and ANT+ connectivity, the Shimano Dura-Ace FC-R9200-P power meter is a user-friendly training partner. A vital tool for serious cyclists, this model delivers reliable, waterproof, dual-sided power measurement. Bluetooth LE and ANT+ ConnectivityThe Dura-Ace FC-R9200-P 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 TechnologyWith hollow technology on the outer chainring, its 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 your 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 a very lightweight.The Best Balance of Stiffness, Strength and WeightThe concept of Hollowtech II technology is focused on producing a superior crankset that will maximise your 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 you need 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.The Shimano Dura-Ace R9200 12 Speed Power Meter has been developed by pursuing the optimum balance of stiffness & rotating performance in a lightweight and beautiful crankset design.Features: Series: DURA-ACE R9200 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 gauge 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 changesA 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 R9200 12 Speed Power MeterWith a rechargeable battery and Bluetooth LE and ANT+ connectivity, the Shimano Dura-Ace FC-R9200-P power meter is a user-friendly training partner. A vital tool for serious cyclists, this model delivers reliable, waterproof, dual-sided power measurement. Bluetooth LE and ANT+ ConnectivityThe Dura-Ace FC-R9200-P 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 TechnologyWith hollow technology on the outer chainring, its 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 your 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 a very lightweight.The Best Balance of Stiffness, Strength and WeightThe concept of Hollowtech II technology is focused on producing a superior crankset that will maximise your 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 you need 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.The Shimano Dura-Ace R9200 12 Speed Power Meter has been developed by pursuing the optimum balance of stiffness & rotating performance in a lightweight and beautiful crankset design.Features: Series: DURA-ACE R9200 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 gauge 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 changesA 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 R9200 12 Speed Power MeterWith a rechargeable battery and Bluetooth LE and ANT+ connectivity, the Shimano Dura-Ace FC-R9200-P power meter is a user-friendly training partner. A vital tool for serious cyclists, this model delivers reliable, waterproof, dual-sided power measurement. Bluetooth LE and ANT+ ConnectivityThe Dura-Ace FC-R9200-P 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 TechnologyWith hollow technology on the outer chainring, its 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 your 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 a very lightweight.The Best Balance of Stiffness, Strength and WeightThe concept of Hollowtech II technology is focused on producing a superior crankset that will maximise your 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 you need 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.The Shimano Dura-Ace R9200 12 Speed Power Meter has been developed by pursuing the optimum balance of stiffness & rotating performance in a lightweight and beautiful crankset design.Features: Series: DURA-ACE R9200 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 gauge 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 changesA 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 R9100 Power Meter 11sp CranksetSetting a new standard in road cycling data collection, this superb crankset features a tough alloy construction which makes it immensely robust as you pedal. Coming equipped with a revised design, this superb version delivers an iconic appearance which is adapted for race-specific disc brake systems while still offering a wide gearing ratio. Bluetooth and ANT+ ConnectivityDesigned for ease of use, this stunning version is kitted out with both Bluetooth and ANT+ connectivity. This allows you to easily pair it with your smartphone and favourite apps to view your performance data and results.Rechargeable Waterproof Power MeterEngineered for all-weather conditions, this sleek model is equipped with a waterproof finish which means you can enjoy accurate data results in the wettest of riding conditions. With an integrated rechargeable battery at its heart, you'll benefit from up to 300+ hours of pedalling precision. This means you can spend less time waiting for it to charge and more time enjoying the ride. Features: Material: Alloy Use: Road BCD: 96mm Speed: 11 speed Connectivity: Bluetooth and ANT+ Battery: Integrated rechargeable Li-on battery Battery Life: 300+ hours Update: Wireless firmware update systemA 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.
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.
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.
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.
SRAM AXS Aero Powermeter Kit 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 cranksFeatures: Material: CNC-machined Aluminium Use: Road, Time Trial, Triathlon Speed: 12 speed Type: Integrated Chainring Powermeter BCD: Direct Mount Chain line: 45mm Accuracy: +/- 1.5% Chainring Size: Multiple options available to select Connectivity: ANT+, BluetoothTechnologies: 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.Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM AXS Aero Powermeter Kit 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 cranksFeatures: Material: CNC-machined Aluminium Use: Road, Time Trial, Triathlon Speed: 12 speed Type: Integrated Chainring Powermeter BCD: Direct Mount Chain line: 45mm Accuracy: +/- 1.5% Chainring Size: Multiple options available to select Connectivity: ANT+, BluetoothTechnologies: 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.Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Rival 12 Speed Power MeterDelivering the reliability, elegance and features of Quarq's legendary crank-based power meter, this spindle-based unit is perfect for riders who want to measure and improve their performance. Entirely contained within the DUB spindle, this model provides clean integration and fits more bikes than ever before. Benefitting from proven Quarq accuracy and dependability, it's an invisible technology that adds minimal weight and will help you get to the finish line faster, and it can also be used to upgrade any eTap AXS bike to power. With its durable aluminium build, long battery life and lightweight, waterproof design, this is a simple and affordable power meter upgrade option.Features: Crankarm Material: Aluminium Use: Road, Gravel Power Meter Type: Spindle Bolt Circle Diameter (BCD): Direct mount (DM) Bottom Bracket Spindle Interface: DUB Bottom Bracket Compatibility: All SRAM Road DUB BBs, All SRAM Road WIDE DUB BBs Bottom Bracket Included: Not included (compatible BB's available to purchase separately) Guard: No guard ANT+ Compatible: Yes Single or Pair: Single arm only Long battery life (400+ hours) to power a season of rides An elegant integrated design Proven Quarq reliability and accuracy User-replaceable lithium AAA battery Waterproof (IPX7 waterproof to 1 meter for 30 mins) Lightweight (less than 40g heavier than standard crankset) Simple and affordable power meter upgrade option DUB-PWR spindle-based unit measures left side power to calculate total wattsTechnologies: SRAM DUB: Forward-thinking and backwards compatible SRAM DUB BB/Crank technology is the workhorse without restraint. Designed for the most discerning pros. And riders who set it and neglect it. DUB is compatible with all major bottom bracket standards. Offering better sealing than ever before, without having to make compromises to fit all frames. Yet it opens the door for a new crank spindle for the world's all-time lightest crankset. It's a new approach that embraces the old. And it's about time.Manufacturer's Part Numbers: PMQ8303002 Black L Left Only 170mm PMQ8303003 Black L Left Only 172.5mm PMQ8303004 Black L Left Only 175mmBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Red 1 AXS Road Power Meter ChainsetFeaturing two high-quality carbon crankarms, this power meter chainset is ready for training by delivering 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 power meter 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 TechnologyAXS 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 behaviour, personalise controls, get maintenance reminders, and update firmware.Bluetooth and ANT+ CompatibleWith 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.Features: Crankarm Material: Carbon Chainring Material: Aluminium Use: Triathlon, Time Trial and Cyclocross Speed: 12 speed Bottom Bracket Compatibility: All SRAM Road DUB BBs Bottom Bracket Spindle Interface: DUB Bolt Circle Diameter (BCD): Direct Mount (DM) Chainline: 45.0mm Guard: No Guard Connectivity: ANT+ and Bluetooth Low Energy (BLE) Bottom Bracket Included: NoTechnologies: 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 40TBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Red 1 AXS Road Power Meter ChainsetFeaturing two high-quality carbon crankarms, this power meter chainset is ready for training by delivering 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 power meter 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 TechnologyAXS 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 behaviour, personalise controls, get maintenance reminders, and update firmware.Bluetooth and ANT+ CompatibleWith 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.Features: Crankarm Material: Carbon Chainring Material: Aluminium Use: Triathlon, Time Trial and Cyclocross Speed: 12 speed Bottom Bracket Compatibility: All SRAM Road DUB BBs Bottom Bracket Spindle Interface: DUB Bolt Circle Diameter (BCD): Direct Mount (DM) Chainline: 45.0mm Guard: No Guard Connectivity: ANT+ and Bluetooth Low Energy (BLE) Bottom Bracket Included: NoTechnologies: 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 40TBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.