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, we've combined our 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 two independent strain gauge assemblies on each crankarm not only measure the total power you're producing, but also tell you exactly how much power you're putting out with each leg. Along with independent leg metrics, it gives you unidirectional power measurement, as well as onboard temperature compensation, resulting in the most accurate readings in any situation (+/-1%).