
The PBR standard C45 steel sprocket 4390 - 428 is a robust part designed for the transmission of roadsters and urban machines. Drawing from PBR's competition experience, it focuses on simplicity and durability: 56 teeth, 428 chain pitch, and a black finish for a sleek and protective look on your swingarm.
Designed to withstand the stresses of a chain transmission, this sprocket is suitable for urban and roadster use where reliability and longevity are sought. Its design minimizes friction against the chain, contributing to more uniform wear of the transmission components when properly mounted and maintained.
Compatibility (examples): SHERCO SM 50 RS SILVER (2025), SHERCO SM 50 RS FACTORY (2025), SHERCO SM 50 RS BLACKMOON (2025). Check the pitch and teeth before installation to ensure compatibility with your motorcycle.