SRAM RED XPLR E1 13 Speed GroupsetSRAM RED XPLR 13 SPEED GROUPSET Effortless Resilience. Effortless Precision. SRAM RED XPLR AXS is our most advanced gravel group, featuring a 13 speed 10 46T range so youre always in the right gear. Precise shifts with tight jumps between cogs keep you in the gearing sweet spot, and the Full Mount derailleur that fits on frames with the UDH interface ensures this system can take whatever you throw at it. True one finger braking and significant weight