The CeramicSpeed OSPW X SRAM Alternative Eagle AXS features high-quality aluminum CeramicSpeed 14-tooth upper and 18-tooth lower pulley wheels to reduce chain drag, while the carbon-reinforced PA cage is lightweight and durable. Built for off-road riding and downhill, it is compatible with 10-52T max cassettes and SRAM Eagle XX1 AXS, SRAM Eagle GX AXS, and SRAM Eagle XO1 AXS derailleurs.