Left crank arm with power meter SRAM Rival D1 DUB

An elegant integrated design.

DUB-PWR spindle-based unit measures left side power to calculate total watts.

Proven Quarq reliability and accuracy.

Long battery life (400+ hours) to power a season of rides.

User replaceable lithium AAA battery.

DUB bottom bracket adds durability and simplicity.

Waterproof (IPX7 waterproof to 1 meter for 30 minutes).

Lightweight (less than 40g heavier than standard crankset).

Simple and affordable power meter upgrade option.

TECHNOLOGIES

AXS - AXS is SRAM's bike component integration system that connects electronic bicycle components and software. The SRAM AXS app allows riders to see battery status, change component behavior, personalize controls, get maintenance reminders, and update firmware.

DUB-PWR - DUB-PWR takes Quarq's reliable and accurate power measurement and elegantly houses it inside the DUB crank spindle for compatibility with any chainring setup, measuring left side power to calculate total watts. It's lightweight, invisible and attainable.

DUB - The relationship between bottom bracket spindel and bearing is the core of DUB technology. It's where stiffness meets durability. We took it a step beyond conventional thinking and made everything simpler - better integrating the relationship between chainring, crank, spindle and bottom bracket. It's this approach to developing a complete system that equals better drivetrain performance.