The HollowTech II 12-speed Ultegra chainset with integrated power meter offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders Accurately calibrated strain gauges are integrated inside the crank arm, this provides a stable measurement system through rotation from both sides for extremely precise data +/-2% accuracy of strain gauge measured power Bluetooth and ANT+ with wireless firmware update and data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system HollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high load The chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transfer Industry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight Wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mm A wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplines HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability(sold separately)
Quarq DZERO Road Power Meter ChainsetFeaturing two high-quality carbon crankarms, this powermeter offers exceptional stiffness, strength and low weight performance on your road bike. Quarq has also equipped this model with two SRAM X-Glide aluminium chainrings for additional durability and precision as you clock up the miles. Designed for compatibility with most 10 speed and 11 speed drivetrains, this powermeter is fitted with a Quarq DZERO DUB spider power meter that delivers accuracy within 1.5%, measuring both legs. Another highlight is it comes complete with many of Quarq's renowned technologies such as MagicZero, AxCad and OmniCal as well as 10K Temperature Compensation and an IPX7 waterproof rating for accuracy and consistency in any weather conditions. DZERO Road Powermeter with X-Glide ChainringsImagine being able to shift smoothly at any time, no matter what. We're talking full-power shifts. Up, down, whatever the road demands. The benefit of X-Glide chainrings is simple, yet, when you think about it, incredibly impactful to the way you ride. Flawless shifting means you'll never again compromise your speed and power in unpredictable road conditions. Quarq precisely paired the different-sized chainrings and redesigned where and how the chain engages with the rings. By aligning the chainring pick-up rivets to the chain pivot pin—rather than the middle of the chain link—you get double the shift opportunities. No more missed shifts, ever. X-Glide puts you in the right gear, right now.Bluetooth and ANT+ CompatibleYour riding and training efforts deserve power measurement that reaches the highest standards of accuracy to help you reach personal records. Because without accurate data, you can't know if you are making the progress you're aiming for. With Quarq's premier DZero power measurement technology that uses Bluetooth and ANT+ connectivity, you'll have the technology to get real results.Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The Quarq DZero DUB Power Meter is paired with the Quarq DUB Crankarms and SRAM's X-Glide 52/36t chainrings to have the perfect fit for most 10- or 11- speed groupsets. A SRAM DUB Bottom Bracket will be required for installation (available separately).Features: Crank Arm Material: Carbon Chainring Material: Aluminium Use: Road Power Meter Type: Spider BCD: 110 Speed: 11 speed Tooth Count: 52/36T Number of Chainrings: 2 BB Spindle Interface: DUB BB Compatibility: All SRAM Road DUB bottom brackets Bottom Bracket Included: No, available separately Guard: No guard Connectivity: Bluetooth or ANT+ Battery: CR2032 Battery Life: 200-hour battery life, change without tools Waterproof Rating: IPX7 Accuracy: Within 1.5%, measuring both legsTechnologies: DUB: The relationship between bottom bracket spindle and bearing is the core of DUB technology. It's where stiffness meets durability. Quarq took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle and bottom bracket. It's this approach to developing a complete system that equals better drivetrain performance. 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. Connectivity: Bluetooth low energy technology and ANT+ wireless data transfer. MagicZero: Automatically checks and recalibrates your power meter as you ride - no need to manually calibrate. AxCad: No cadence magnet required. Battery: CR2032, 200-hour battery life, change without tools. OmniCal: Swap chainrings without affecting accuracy. Accuracy: Within 1.5%, measuring both legs. 10K Temperature Compensation. IPX7 waterproof rating.Manufacturer's Part Numbers: 00.3018.291.170 Black 52/36T 170mm 00.3018.291.172 Black 52/36T 172.5mm 00.3018.291.175 Black 52/36T 175mmBuy Quarq 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.
Features: Hollow carbon arms with UD carbon finish 386Evo 30mm AL7050 alloy axle fits every frame (purchase BB separately) AL7075 100% CNC chainrings AL7075 Torx T-30 alloy chainring bolts Fits Shimano and Sram 10-11 speed systems UD carbon finish Weight: 585g Power2max Features simple2use Auto Zero: every time you stop pedalling for 3 seconds or more your power2max re-zeros , no need to re-zero manually. No cadence magnet needed: you don't need to install a cadence magnet on your bike. Your power2max calculates cadence precisely using its internal accelerometer. Batter change: when the time come to change your battery - after 300 to 400 hours of use (6,000 to 12,000km) - you can do it yourself. ±2% Precision Power2max power meters deliver state of the art data: they achieve an accuracy of ±2% or better including all environmental influences. power2max power meters achieves this accuracy through a refined design and high quality manufacturing processes. *Designed, engineered and made in Germany* Power2max manufactures the power meters in Germany with the highest quality production standards. *ANT+* Power2max power meters use the ANT+ standard to transmit data wirelessly to your bike computer. The ANT+ standard guarantees reliable transmission and offers a large number of bike computers to choose from. *Bluetooth ready* Power2max FSA power meters are Bluetooth ready and can be upgraded to transmit the data wirelessly not only with ANT+, but also via Bluetooth communication (with purchase of firmware upgrade). *Upgradeable* Power2max FSA power meters can be upgraded to have the software feature of left-right balance
The SRAM Quarq AXS Aero Power Meter Kit makes use SRAM's new X-Range gearing technology, offering smoother shifting and a wider gear range. The rings are combined with an integrated Quarq Dzero power meter that provides accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelyX-Range gearing provides more range and smoother gear progression, so you're always in the right gear8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksUsing a unique one-piece design that bolts straight to the crank arms, the X-Range rings work in conjunction with the X-Range XG-1290 and XG-1270 cassettes to provide a wider gear range and smoother progression between gears, meaning you'll always be in the right gear. The unique 10t start of the cassettes means you can use smaller chainrings than normal while retaining a similar gear for top speed. The smaller chainrings also mean you'll have a lower bottom gear for punishing climbs. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
The SRAM Quarq AXS Aero Power Meter Kit makes use SRAM's new X-Range gearing technology, offering smoother shifting and a wider gear range. The rings are combined with an integrated Quarq Dzero power meter that provides accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelyX-Range gearing provides more range and smoother gear progression, so you're always in the right gear8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksUsing a unique one-piece design that bolts straight to the crank arms, the X-Range rings work in conjunction with the X-Range XG-1290 and XG-1270 cassettes to provide a wider gear range and smoother progression between gears, meaning you'll always be in the right gear. The unique 10t start of the cassettes means you can use smaller chainrings than normal while retaining a similar gear for top speed. The smaller chainrings also mean you'll have a lower bottom gear for punishing climbs. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
The SRAM Quarq AXS Aero Power Meter Kit makes use of a unique direct mount aerodynamic X-SYNC chainring with an integrated Quarq Dzero power meter that improves aerodynamic performance, while providing impeccable chain retention and accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelySingle chainring design simplifies functionality and reduces weightX-SYNC chainrings provides impeccable chain retention8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksThe X-Sync chainring features a special laser-etched finish that is more durable, improving the usable life of the chainring; this isn't just for race day only. The unique X-Sync narrow-wide too profile is not only supremely efficient and durable, but it also provides impeccable chain retention. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
The SRAM Quarq AXS Aero Power Meter Kit makes use of a unique direct mount aerodynamic X-SYNC chainring with an integrated Quarq Dzero power meter that improves aerodynamic performance, while providing impeccable chain retention and accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelySingle chainring design simplifies functionality and reduces weightX-SYNC chainrings provides impeccable chain retention8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksThe X-Sync chainring features a special laser-etched finish that is more durable, improving the usable life of the chainring; this isn't just for race day only. The unique X-Sync narrow-wide too profile is not only supremely efficient and durable, but it also provides impeccable chain retention. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
The SRAM Quarq AXS Aero Power Meter Kit makes use of a unique direct mount aerodynamic X-SYNC chainring with an integrated Quarq Dzero power meter that improves aerodynamic performance, while providing impeccable chain retention and accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelySingle chainring design simplifies functionality and reduces weightX-SYNC chainrings provides impeccable chain retention8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksThe X-Sync chainring features a special laser-etched finish that is more durable, improving the usable life of the chainring; this isn't just for race day only. The unique X-Sync narrow-wide too profile is not only supremely efficient and durable, but it also provides impeccable chain retention. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
Stages Power LR for Shimano Ultegra R8000 is a dual-sided power meter for those who desire bilateral measurement.SPECIFICATIONS:Accuracy: ± 1.5%,Weight: Only less than 35gr to base crank arm,Battery Life: 200+ hours (coin cell: CR2032),Power range (Watts): 0 - 2500,Cadence range (rpm): 20 - 220,Water resistance rating: IPX7,Frame Compatibility: Most frames, see fit guide in our Support section,Device Compatibility: ANT+, Bluetooth Smart Ready,Software Compatibiity: Stages Link, Today's Plan, Training Peaks, Strava, Garmin Training Center and others.ADDITIONAL FEATURES:Tool free battery replacement,Active temperature compensation,Accelerometer based cadence measurement,Wireless firmware upgrades.
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.The PRECISION PRO Ride Ready comes pre-installed on a new Shimano crankset.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.
4iiii Precision Pro Ultegra R8000 Power MeterDesigned to give every level of rider a professional standard of performance analysis, this excellent onboard power meter measures your outputs to within one percent and uses wireless technology to relay the data straight to your device. Gauging your pedal power and cadence, this Shimano Ultegra R8000-compatible model features 3D power meter technology to read tri-axial crank strain, to produce super accurate riding data. Top-Performance, Precision Power Meter Compatible with a variety of ANT+ and Bluetooth Smart phones, computers and other devices, the Precision Pro syncs with the 4iiii app which lets you monitor the rider compensation scale and other analysis features. Fitting snugly on your crankset, it measures the individual outputs of both legs for a concise and unobtrusive experience and relays the information to your chosen gadget. Coming equipped with a 100+ hour coin cell battery, this top-level training companion helps to keep an eye on your progress mile after mile. Features: Compatibility: Shimano Ultegra R8000 drivetrain Battery Life: 100+ hours on 2032 coin cell battery Connectivity: ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products Technology: 3D power meter technology (patent pending) measures tri-axial strain on your crank Accuracy: +/- 1% Upgrades: Over the air capability Weight: 25g Buy 4iiii Components from Chain Reaction Cycles, the World's Largest Online Bike Store.