



PBR Standard Steel Sprocket 579M - 520 (manufacturer's reference: 579M 14 18NC). Designed by PBR, an Italian specialist in motorcycle transmission, this sprocket incorporates expertise from R&D efforts conducted with racing teams to provide a reliable replacement part that meets road requirements.
This sprocket is aimed at riders looking for a robust part for the primary transmission of their roadster. Its 14-tooth design modifies the final drive ratio compared to other sizes and is compatible with 520 pitch chains. The steel construction ensures strength and wear resistance, suitable for road use and regular maintenance.
Before installation, check compatibility with your output shaft and the sprocket/chain assembly; installation must follow the manufacturer's recommendations. This simple and direct replacement part allows for the restoration of a rolling chassis while maintaining expected road behavior.
Compatible motorcycles (examples):