CeramicSpeed OSPW X GRX/RX 2X11Engineered for ultimate drivetrain efficiency and unparalleled performance, the CeramicSpeed OSPW X GRX RX 2x11 system optimizes power transfer for gravel and adventure riding. The CeramicSpeed OSPW X GRX RX 2x11 system is a high performance upgrade meticulously designed to seamlessly integrate with your Shimano GRX and RX 11 speed 2x rear derailleurs. This Oversized Pulley Wheel System significantly reduces friction, delivering measurable watt
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