SRAM

Force AXS Left Crank Arm and Power Meter Spindle Assembly - Carbon, E1

SRAM Force AXS Left Crank Arm and Power Meter Spindle Assembly - Carbon, E1 adds trusted, spindle-based power measurement to a Force AXS build with a clean, service-friendly upgrade path. The carbon left arm integrates a Quarq-powered DUB spindle unit that captures left-side power and calculates total watts, giving consistent training data without changing the bike’s fit or drivetrain layout.

Power meter and crank in one assembly keeps the install straightforward for riders who want accurate power for structured training, pacing, and long-term performance tracking—while retaining the familiar 45mm chainline spec used on compatible setups.

What makes it a smart Force AXS power upgrade

1. Integrated DUB spindle power meter - Spindle-based design simplifies the upgrade and keeps the system compact and protected
2. Left-side measurement with total watts calculation - Captures left-leg power and doubles it for total output, delivering actionable training data with minimal added complexity
3. Force AXS carbon left crank arm - Carbon construction targets low weight and a crisp, direct pedaling feel for road and fast mixed-surface riding
4. Quarq accuracy and reliability - Proven power meter platform for repeatable data ride after ride, useful for intervals, pacing, and fitness tracking
5. IPX7 water resistance - Rated waterproof to 1 meter for 30 minutes for wet-weather riding and confident washdowns
6. Build-note compatibility - Right crank arm, bottom bracket, spider, and chainrings are sold separately