



PBR Steel Sprocket 600M - 10 Teeth (Manufacturer Ref: 600M 10 18NC)
Replacement sprocket for 420 transmission, designed by PBR for urban machines and roadsters. Made from high-quality 18NCD5 steel alloy, this standard 600M sprocket features geometry and machining optimized for easy installation and precise compatibility with 420 drivetrains.
The 18NCD5 alloy provides good resistance to corrosion and abrasion while maintaining the mechanical strength needed for small motocross and 50cc rider/roadster applications. Ideal for maintenance interventions or restoring a transmission system, this sprocket installs easily and integrates into original gear ratios without modification.
Common compatibilities: RIEJU MRT 50 SM (2025), FANTIC XM 50 PERFORMANCE (2025), BETA RR 50 MOTARD (2025). A reliable stock part for those seeking a robust and simple solution for their 420 chain.