
This part being universal, it may require adaptations
EK 420SR 420 Drive Chain – Manufacturer Ref: 420SR-STL 140 SPJ
Designed by EK CHAIN for lightweight machines and urban, cross, quad, and roadster requirements, this 420SR focuses on strength and flexibility. The SR series features a heat treatment of the plates that enhances their durability while maintaining the chain's flexibility, even after long usage sessions. Steel/steel finish for a sleek look and extensive compatibility with standard sprockets and crowns.
Ideal for DIY enthusiasts and riders of small displacement bikes — compatible with models such as the RIEJU MRT 50 SM (2025), the FANTIC XM 50 PERFORMANCE (2025), or the BETA RR 50 MOTARD (2025). Perfect for standard drive replacement: sprocket/crown mounting, play adjustment, and regular lubrication are recommended to optimize wear uniformity. A sleek, robust chain designed to last on both road and rough terrain.