No matter your skill level or experience on the bike, there's no better way to enhance your training and racing performance than by riding with a power meter. Lucky for you, Specialized has combined their incredibly light and stiff carbon fiber S-Works road cranks with dual-sided power measurement, making it the lightest (440g/172.5mm) and most accurate power meter available. The development of Power Cranks began with Specialized's Human Performance Team looking at riders in realistic scenarios on the bike. Historically, power meters have been validated by two different methods—one is by measuring the produced torque by applying a static, linear load to a crankarm or chainring, while the second uses a power generating motor to pedal the bike. Well, cycling is neither static nor linear, and humans apply power much differently than a machine. So, they found that neither of these methods answer the "real-world" accuracy question. To get the best test for accuracy, in all types of riding scenarios, Specialized built their own cycling treadmill, the WinMill, to measure power output to a known truth. This new benchmark lets them evaluate accuracy under all riding conditions—seated versus standing, various power and cadence levels, different weights, and a myriad of gear. This data acquisition process is their gold-standard for testing power meters, and through their testing and external validation from the Locomotion lab in Boulder, Colorado, Power Cranks have been proven to have the highest accuracy in real world scenarios (+/- 1.5%). The Dual-Sided S-Works Power Cranks utilize separate strain gauge systems to individually measure the effort produced by each leg. This maximizes the accuracy of your total power numbers, plus it helps you to better understand your performance as fatigue increases and when you're recovering from injury. And with class-leading temperature compensation firmware and waterproof enclosures, Power Cranks are easy to live with. Calibration is only required during seasonal-type fluctuations in temperature, and the included wrench makes battery swaps a breeze. - +/-1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO. - Independent, dual-leg power measurement. - Works with ANT+ and Bluetooth devices. - Easy set-up and diagnostics with the Specialized Power app. (iOS and Android versions available). - Hollow carbon crankarms, carbon spider, and oversized alloy spindle offer superior stiffness and lighter weight than the competition—440 grams for 172.5mm crankarm length. - Fits Specialized road frames with OSBB or PF30 bottom bracket shell, as well as most BB30 road frames. - 110 BCD carbon spider (also compatible with 130 BCD carbon spider—sold separately). - Compatible with Shimano and SRAM drivetrains. Chainrings are sold separately. Use only with Specialized/Praxis chainrings 06217-1702 (52/36T) and 06218-1713 (50/34T). - Available in 165-180mm crankarm lengths.
The SRAM RED AXS power meter breaks with tradition — and breaks through to new levels of performance. SRAM reengineered road gearing: reducing front chainring size and adding more range to the rear cassette. They also maintained a 13-tooth delta on all chainring pairs, ensuring precise shifting for any setup. This results in more useful gearing and better shifting across all configurations. These power meters are also designed with Quarq's premier DZero power measurement technology fully integrated into the crankset. Welcome to the pinnacle of the power meter. - X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear - Integrated power measurement - Power meter is fully integrated into the chainring set for lighter weight - 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 - Improved front shifting performance for crisp and accurate front shifts - Unique chainring shape results in a lighter weight, stiffer, more durable crankset - Integrated chainring design significantly reduces weight - DUB bottom bracket adds durability, simplicity and broad compatibility - Speeds: 12 - BB Compatibility: All SRAM Road DUB BBs - BB Spindle Interface: DUB - Chainring material: Aluminum - Crank arm material: Carbon - Power Meter Type: ANT+ and BLE - Bottom bracket not included
Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. It's invisible technology that adds minimal weight and will help you get to the finish line faster, and it can be used to upgrade any eTap AXS bike. - An elegant, integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Simple and affordable power meter upgrade option - Right Arm/BB/Spider/Chainrings NOT INCLUDED
Every innovation in Quarq's DZero platform represented the 10+ years of Quarq's advances in power meter technology. This same platform is now combined with XX1 Eagle DUB CARBON TUNED crankset—lightest, stiffest, and strongest to date, and X-SYNC 2 chainring—providing significantly quieter performance with better mud clearing and extraordinary durability. Ready to power every ride. - 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 warranty - IPX7 waterproof rating - Accuracy: within 1.5%, measuring both legs
Quarq's Battery Cover replaces your lost or damaged one. It's water-tight, made of aluminum, and works with Quark's Elsa, Riken, and Red 22 power meters (sold separately).
Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The DFour DUB was 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. Enjoy 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. Train 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. 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 Compensation - Battery - CR2032, 200-hour battery life, change without tools - OmniCal - swap chainrings without affecting accuracy - 2-year warranty - IPX7 waterproof rating - Accuracy - within 1.5%, measuring both legs
Dual-sensing Pedal-based Power Meter Ride stronger, smarter, connected with the Vector 3 pedal-based power meter. As you strive to beat your personal best on your next race or Gran Fondo, power is the most reliable way to gauge your performance on any given day, at any given time. Unlike other power meters, Vector 3 has the sensors housed right in the pedals, so it delivers reliable, accurate data on every training session. - Installs like any other pedal and quickly transfers between bikes - Measures total power, left/right balance, cadence and cycling dynamics - Sleek design provides greater cornering clearance and improved stack height - Fully integrates with Garmin cycling ecosystem for data analysis - Allows for easy updates via compatible Edge cycling computers, ANT+ connectivity or Bluetooth-enabled fitness devices and Garmin Connect Mobile app - Battery life: up to 120 hours - Cleat hardware included WARNING: The maximum weight limit of the cyclist using the Vector system is 231 lbs (105 kg). Cyclists over this weight limit risk personal injury and property damage. Specifications: - Battery type: LR44/SR44 (x4) - Battery life: up to 120 hours - Weight: 316 g - Max. rider weight: 105 kg - Accuracy: +/- 1.0% - Cleat type: Keo - Q-factor: 53 mm/55 mm with supplied spacing washer - Stack height: 12.2 mm - Field calibration - Adjustable release tension - Garmin Connect - Measurement location: Spindle - Communication: ANT+ and Bluetooth
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