SRAM Force AXS Wide Left Crank Arm and Power Meter Spindle Assembly - 167.5mm 12-Speed DUB Spindle Interface Iridescent Gray D2. Power measurement is a crucial part of training so SRAM made it as easy as possible to upgrade your Force AXS ride with Quarq technology. DUB-PWR takes the legendary reliability and accuracy of Quarq technology and inserts it into the crank spindle for clean integration that fits more bikes than ever. It’s invisible technology that adds minimal weight and will help you get to the finish line faster.

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

Waterproof (IPX7 waterproof to 1 meter for 30 minutes)

DUB bottom bracket (Sold separately) adds durability and simplicity