Becoming the best rider we can be starts with our training, but the technology from a tool like the SRAM RED AXS Power Meter Spider DUB Crankset helps us along the way. This high-performance crankset features an integrated power meter that measures our left and right leg power balance at a /-1. 5% accuracy, regardless of weather. It provides crisp and accurate front shifts with a 13-tooth gap on the rings and X-Range gearing technology, designed to keep us in the right gear with a smoother gear progression.