XX D1 DUB MTB Wide Left Arm and Powermeter Spindle

The XX Eagle AXS Transmission power meter integrates Quarq's DUB-PWR spindle into a carbon crank arm, measuring left-side power at a stated +/- 3% accuracy and calculating total wattage from it. Flight Attendant compatibility ties power data into the same connected system already managing suspension response, giving a rider one data ecosystem instead of a standalone power number. The unit works with any chainring setup, isolating the upgrade to the left arm and spindle without requiring a bottom bracket, spider, or chainring change.

What Our Gearhead® Experts Are Saying:

"I've logged data off this power meter across technical singletrack where cadence and pedal stroke never settle into a rhythm, and the numbers have never drifted from what a lab-calibrated unit reads. A stated three percent accuracy holds up the same on a rock garden as it does on a smooth climb."