Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The Quarq DFour DUB Power Meter is paired with the Quarq DUB Crankarms to pair with your Dura-Ace R9100 or Ultegra R8000 chainrings. A SRAM DUB Bottom Bracket will be required for installation.Key Features: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 CompensationBattery -- CR2032, 200-hour battery life, change without tools,OmniCal -- swap chainrings without affecting accuracy,IPX7 waterproof rating,Accuracy -- within 1.5%, measuring both legs.,.Specifications:Speeds: 11,Crank arm length: 170mm,BB Compatibility: All SRAM Road DUB BBs,Chainring Size: n/a,Bolt Circle Diameter (BCD): 110 BCD,Chainline: n/a,BB Spindle Interface: DUB,Chainring material: n/a,Guard: No Guard,Crank arm material: Carbon,Color (Crank arm): Natural carbon,Power Meter Type: Spider.
Designed to sit discreetly inside your bottom bracket shell, this high-quality power meter uses Bluetooth and ANT+ technology to relay your riding data right to your compatible device for instant, mid-ride analysis. Taking note of your cadence and pedal efficiency, this Cinch model works with 1x or 2x configurations and fits a wide range of cranksets for ultimate versatility and adaptability. Working in tandem with the Cinch Power Meter App for iPhone or Android, it comes with a USB-rechargeable battery for hundreds of hours of use, making it the ideal training partner for the performance-focused rider.
Race Face Race Face Cinch Power Meter SpindleThe perfect training companion for avid enduro and cross country riders, this discrete power meter sits inside your bottom bracket, measuring your pedal and cadence data as you seek the best possible form. Kept safe by your BB shell, the Cinch uses Bluetooth and ANT+ to relay data to the Cinch Power Meter App for iPhone or Android, letting you analyse and adapt your run in real time. Compatible with a variety of cranksets, this is a superb performance-enhancing gadget. Features: Power Accuracy: +-/2% Measurements: Cadence, pedal efficiency Connectivity: Dual Bluetooth low energy technology and ANT+ Battery Life: Over 400h, USB rechargeable Compatibility: 1x or 2x configurations App: Cinch Power Meter App for iPhone or Android Fits: Next SL G4, Next G3, Next R, Turbine Size: BSA 68/73mm, BB92/89, PF30 68/73mm Weight: 65g Buy Race Face Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Rotor INpower Flow MAS power meter allows you to record your power readings via your ANT+ head unit. Inconspicuously integrated inside the crank axle, INpower is protected from shocks, crashes and outside contaminants plus it allows you to maintain your bike’s sleek, elegant aesthetics. The battery is also located within the bottom bracket spindle. Image shows a INpower left hand crankarm Sophisticated metrics interpret your data through user-friendly software and advise you when to turn up the pace, ease off the pedals, do another interval or call it a day. MAS (Micro Adjust Spider) Technology The new Micro Adjust Spider (MAS), offers more positions to suit every rider’s needs. Their new advanced MAS spider has an alternative bolt hole placement, as well as the standard bolt hole placement (see image below), allowing for intermediate positions between existing OCP (Optimum Chainring Position) of the Q-Ring. A standard crank in combination with the OCP of the Q-Rings, allows approximately 5 degrees of adjustment. Image shows a standard crankset with the MAS spider drilling The MAS spider when used with Q-Rings offers half positions giving approximately 2,5 degrees. This means that you can micro adjust the position of your Q rings, to suit your riding style. Integrated Electronics Inside Electronics and battery are integrated inside the axle, making INpower shock and contaminant resistant, and waterproof with cleaner data transfer. Tool-Free Battery Replacement INpower uses a standard AA battery that typically lasts 300 hours when fully charged. A rechargeable AA battery can also be used. Compatible with all ROTOR 30mm Cranks INpower’s axle-based technology offers a wide range of cranks for both road and off-road riding.
Rotor INpower Flow MAS Power Meter CranksetSending pedal-by-pedal power measurements right to your ANT+-enabled head unit, this proficient power meter crankset from Rotor is an excellent addition to any training setup. Designed to measure power, cadence, TORQUE 360, OCA, torque effectiveness (left) and pedal smoothness, this innovative device gathers data seamlessly and almost invisibly, from within the crank axle. Waterproof and protected from riding impact, it works hard to give precise performance monitoring as you ready yourself for the race season. Innovative and Intuitive Power Measurement CranksetHolding its battery within the universal bottom bracket, the INpower Flow features MAS (Micro Adjust Spider) Technology, with various positions that can be customised to each rider's individual preference. Equipped with alternative bolt hole placement alongside the standard placement, it allows you to find positions between the optimum chainring position of the Q-Ring to suit your personal riding style. Keep on top of your outputs as you look to make gains with this fantastically efficient Rotor crankset. Features: Power Meter Type: ANT+ USB Axle Material: Aluminium Axle Size: 30mm with Universal Bottom Bracket Spider Type: Micro Adjust BCD: 110mm and 130mm BB Compatibility: Universal Battery: AA 1.5V (300 hours riding time) Data Transmitted: Power, Cadence, TORQUE 360, OCA, torque effectiveness (left) and pedal smoothness Software: ROTOR INpower user software, Trainingpeaks/ROTOR analysis Technologies MAS (Micro Adjust Spider) Technology: The new Micro Adjust Spider (MAS), offers more positions to suit every rider’s needs. Their new advanced MAS spider has an alternative bolt hole placement, as well as the standard bolt hole placement (see image below), allowing for intermediate positions between existing OCP (Optimum Chainring Position) of the Q-Ring. A standard crank in combination with the OCP of the Q-Rings, allows approximately 5 degrees of adjustment. The MAS spider when used with Q-Rings offers half positions giving approximately 2,5 degrees. This means that you can micro adjust the position of your Q rings, to suit your riding style. Integrated Electronics Inside: Electronics and battery are integrated inside the axle, making INpower shock and contaminant resistant, and waterproof with cleaner data transfer. Tool-Free Battery Replacement: INpower uses a standard AA battery that typically lasts 300 hours when fully charged. A rechargeable AA battery can also be used. Compatible with all ROTOR 30mm Cranks: INpower’s axle-based technology offers a wide range of cranks for both road and off-road riding. Buy Rotor Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
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)
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)
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)
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)
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)
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)
With several years of development and working closely with professional teams you can expect extreme accuracy from Shimano's first fully integrated power meter HollowTech II 12-speed Dura-Ace chainset Accurately calibrated strain gauges are integrated inside both left and right crank arms, 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 Hollow outer chainring, giving vast improvements in rigidity and increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading HollowTech II cold forged hollow crank arms have evolved to increase rigidity, reduce weight, and improve strength The teeth have been developed to work only in conjunction with the 12-speed chains for improved contact providing more efficiency and improved power transfer There is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplines HollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability