The Rival AXS left crank arm features a power meter entirely contained in the DUB spindle unit for effortless integration with any bike. Just install, pair, and ride.

• Rival AXS wide aluminum left crank arm with power meter spindle
• Spindle-based power meter unit measures left side power to calculate total watts
• Long battery life to power a season of rides
• Waterproof (IPX7 waterproof to 1 meter for 30 minutes)
• Right crank arm, Bottom bracket, Spider, Chainring sold separately)