
PBR Steel C45 Standard Sprocket 4324 - 428 (57 Teeth)
Designed by PBR and based on experience gained in competition, this sprocket effectively replaces a worn part on roadsters equipped with a 428 transmission. Its C45 steel construction provides the necessary strength to transmit engine torque to the rear wheel while maintaining precise tooth engagement for satisfactory longevity.
Easy to install as a standard replacement, this sprocket is suitable for maintenance tasks as well as occasional upgrades on small displacement bikes. It is particularly aimed at owners of YAMAHA TDR 125 (2000–2002) and other roadsters compatible with the 428 pitch. For optimal performance, replace the sprocket at the same time as the pinion and chain when any of the components show signs of wear.
PBR product suitable for road use and maintained according to the brand's requirements — always check compatibility with your model before installation.