xx t type power upgradeThe XX Eagle AXS Transmission Left Arm Spindle Power Meter utilizes our World stage proven XX crank arm with a subtly integrated power meter to record and deliver live, accurate power readings to your head unit. We achieve this by utilizing what we call DUB PWR a unique design that elegantly houses Quarq's reliable and accurate power measurement inside the DUB crank spindle itself. Measuring left side power to calculate total watts, it's subtle,
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