Sram Red AXS Power Meter 1x DUB 175x40 DUB crankset silver/greySRAM RED 1 AXS Power Meter Crankset 175mm 12 Speed 40t Direct Mount DUB Spindle Interface Natural Carbon D1. The SRAM RED 1 AXS power meter is a huge step forward in 1x power meter design. It offers exceptional aerodynamics for triathlon and time trial bikes thanks to direct mount chainrings with fully integrated power. It also provides the simplicity and tighter gearing range that is well suited for road racing and riding in flatter terrain where a