Elevate your cycling performance with the cutting-edge crank arm and power meter spindle assembly, designed for seamless integration with your Force AXS setup. This innovative technology incorporates Quarq's renowned reliability and precision, allowing you to measure your left-side power output accurately and calculate total wattage for optimized training sessions. The DUB-PWR spindle-based unit is engineered for compatibility with a wide range of bikes, making it easier than ever to enhance your ride.DUB-PWR spindle-based unit measures left side power to calculate total wattsProven Quarq reliability and accuracyLong battery life (400+ hours) to power a full season of ridesWaterproof (IPX7 rated for immersion up to 1 meter for 30 minutes)DUB bottom bracket (sold separately) enhances durability and simplicity.