Rival XPLR AXS Power MeterDescription The SRAM Rival XPLR AXS Power Meter Crankset brings sophisticated power measurement to 1x gravel and all road builds without adding unnecessary complexity. It integrates a spindle based power meter unit directly into the DUB spindle, giving you accurate left side power data that SRAMs system uses to estimate total power all while keeping weight low and protection high. Designed around the DUB Wide standard, this crankset uses a 47. 5 mm