SRAM Rival XPLR AXS E1 Wide Power Meter delivers precise spindle-based power measurement for the serious cyclists. This system captures left-side power data and calculates total output in watts, giving you the metrics needed for structured training and performance optimization. Built on SRAM's DUB Wide axle standard with lightweight aluminum crank arms, it integrates seamlessly with 12-speed drivetrains and direct mount chainrings. The user-replaceable AAA battery ensures extended runtime without complicated charging protocols. Note: bottom bracket sold separately.