
The PBR standard C45 steel sprocket 4390 - 428 is designed for the final drive of urban and roadster machines. Drawing on PBR's experience in competition, it combines robustness and a refined finish to withstand the daily demands of the road and traffic. Its black hue discreetly integrates into the rear end while offering good resistance to the elements.
Easy to install as an original replacement, this sprocket is aimed at riders looking for a durable part for urban or road use. Manufacturer reference: 4390 60 F. Compatible notably with SHERCO SM 50 RS (2025) models — RS Silver, RS Factory, and RS Blackmoon — as well as other machines equipped with a 428 pitch chain.