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, these have combined 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 the 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, it was 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, a cycling treadmill, the WinMill, was built to measure power output to a known truth. This new benchmark lets evaluation of 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 the gold-standard for testing power meters, and through 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%).
Features:
- Dual-Sided Measurement - The Dual-Sided S-Works Power Cranks utilize separate strain gage systems to individually measure the effort produced by each leg.
- Temperature Compensation - Class-leading temperature compensation firmware and waterproof enclosures make Power Cranks easy to live with.
- Calibration - Calibration is only required during seasonal-type fluctuations in temperature.
- Battery Swaps - The included wrench makes battery swaps a breeze.