The Rotor Q-Ring AXS Chainring is an inner ring for riders who want to run a Rotor component with a SRAM AXS drivetrain and SRAM Spider. This chainring is compatible with SRAM Red, Force, and Rival AXS groupsets. It is compatible with all SRAM road AXS cranksets with a 107×4 BCD or the AXS Power Meter. The oval chainring can be purchased in a 50-37 or 48-35t configuration with a 107×4 BCD. If you are currently running a 48t chainring and are considering moving up to 50t, please make sure there is enough room to raise the front derailleur to avoid clearance issues. The Rotor Q-Ring AXS Chainring is perfect for the rider who wants to keep their SRAM drivetrain but wants a boost in pedaling efficiency.