About SRAM Apex AXS Crankarm Power Meter Upgrade
Accurate, reliable power measurement is practically a requirement these days, and the Apex AXS crankarm power meter upgrade is the easiest way to get precise power numbers. With the tech hidden inside the DUB spindle, it fits almost any bike while remaining stealthy.

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

Proven reliability and accuracy

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

User replaceable AAA lithium 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)

Technology
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.

Specifications
Speeds: 12

Crank Arm Length: 160mm, 165mm, 170mm, 172.5mm, 175mm

BB Compatibility: All SRAM Road WIDE DUB BBs, except Ai

Chainring Size: n/a

Bolt Circle Diameter (BCD): Direct Mount (DM)

Chainline: n/a

BB Spindle Interface: DUB

Chainring Material: No rings

Hub Spacing Compatibility: n/a

About SRAM
Founded in 1987, SRAM (an acronym of the 3 founders names, Scott, Ray and Sam) is a privately owned bicycle component manufacturer located in Chicago. They're known for developing many of the inovative technologies used in bikes today including ETAP wireless electric shifting, Grip Shift, dedicated single chain ring drivetrains, narrow wide chainrings and more. Sram also own bicycle component brands Rockshox, Quarq, Zipp and Truvativ.