Quarq

Quote: "Quarq power meters, en SRAM power meters die gebruik maken van Quarq technology, measure power at the crankset spider. This the best place on the bike to measure power because all of your pedaling effort flows directly through the spider and it can be measured with great precision. We combine our power measurement technology with SRAM's topflight crank arms to create an integrated, high performance bicycle component, supported by a 2-year warranty and worldwide customer service. Quarq power meters are trusted by the world's best teams and athletes. In the past three years Quarq has powered world championships, cobbled classics, multiple stage wins in the Tour de France and Giro d'Italia, and two first place finishes at Ironman® Hawaii. "