SRAM RED XPLR X-Sync Thread Mount Chainring - 40t 12/13-Speed Thread Mount For RED XPLR AXS PM Spider 6.5mm Offset BLK/Silver E1SRAM RED XPLR X Sync Thread Mount Chainring 40t 12 13 Speed Thread Mount (For RED XPLR AXS PM Spider) 6. 5mm Offset Black Silver E1. Designed for use with SRAMs new RED XPLR AXS power meter these replacement rings are purpose made for use with a Thread Mount spider design. This chainring mount system allows riders to minimize weight maximize stiffness and accuracy and retain the ability to swap ring sizes. Thread Mount design is light stiff and