SRAM Rival AXS E1 DUB Wide Left-side PowermeterInvisible technology that will help you get to the finish line faster? Yes please. Rival power meter unit is entirely contained within the DUB spindle for effortless integration with any bike. Just install, pair, and ride. Spindle based unit measures left side power to calculate total watts 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
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