SRAM Apex AXS Crankarm Power Meter

The DUB-PWR unit measures power directly from the left crank arm and then doubles that figure to estimate your total power output. While this is a standard approach for many power meters, keep in mind that it assumes your left and right leg power balance is roughly equal.

This upgrade is specifically designed for SRAM Road WIDE DUB bottom brackets. It is not compatible with standard non-WIDE DUB setups or Ai-offset frames, so double-check your current bottom bracket specification before purchasing.

It is straightforward and requires no special tools. The unit uses a standard AAA lithium battery, which you can access by removing the spindle cap, making it easy to swap out mid-season without needing to recalibrate the entire system.

Yes, the unit carries an IPX7 waterproof rating, meaning it is fully sealed against rain, mud, and road spray. You can ride in heavy downpours without worrying about damaging the internal electronics.

Because the technology is housed entirely within the spindle, the impact on your bike's weight is negligible. It is designed to integrate seamlessly into your existing drivetrain without altering your bike's Q-factor or handling characteristics.

Yes, you will need to use the SRAM AXS app on your smartphone to perform initial setup, firmware updates, and zero-offset calibrations. It is a simple process that ensures your power data remains accurate over time.