



PBR Standard Steel Sprocket 579M - 520 (manufacturer part number: 579M 15 18NC)
Designed by PBR, an Italian specialist in competition transmission components, this standard steel sprocket is aimed at riders looking for a reliable replacement part for 520 pitch drivetrains. Its steel construction and strict manufacturing process ensure a robust component ready to be installed on a roadster or light trail transmission.
Choosing a 15-tooth sprocket affects the gearing: it provides a balance between acceleration and top speed depending on the sprocket/crown ratio. This PBR sprocket is suitable for replacing a worn component, restoring proper chain alignment, and maintaining consistent engine performance.
Common mounting examples: YAMAHA R9 (2025 - 900 cc), YAMAHA TENERE 700 RALLY (2025 - 700 cc), YAMAHA TENERE 700 (2025 - 700 cc). Before installation, check compatibility with your model, inspect the condition of the chain, and adhere to the torque specifications recommended by the manufacturer.