pedivella sinistra con misuratore di potenza sram force dub axs 12vThe power meter is a crucial part of training, so upgrading your Force AXS with Quarq technology has been made as simple as possible. DUB PWR takes the legendary reliability and accuracy of Quarq technology and puts it into the crank spindle for a clean integration. Its invisible technology that adds minimal weight and will help you reach the finish line faster. FEATURES: The DUB PWR spindle based unit measures left side power to calculate total watts