
PBR Steel C45 Standard Sprocket 300 - 525 (Manufacturer Ref: 300 42 C45) — a rear sprocket designed for the final drive of roadsters. Machined from C45 steel and delivered in a black finish, it is aimed at riders looking for a robust and easy-to-install part to replace the original sprocket.
Born from PBR's competition experience, this sprocket adheres to a strict manufacturing process to ensure a precise fit with the pinion and chain. It is intended for road use on compatible 525 machines and facilitates a reliable mechanical connection between the engine shaft and the rear wheel. Installation is done by bolting onto a standard hub — check the number and diameter of the holes before ordering.
Main compatibility (examples):
Replace your worn sprocket with a PBR part recognized for its consistent manufacturing and suitable fit for the 525 transmissions of roadsters.