EK CHAIN 420SR 420 Universal ChainRef : EKC00736A / 1129896030

EK 420SR 420 Transmission Chain (Manufacturer Ref: 420SR-STL 142 SPJ) — a chain designed for the secondary transmission of small displacement and lightweight machines. The SR series features a specific heat treatment of the plates that enhances wear resistance while maintaining the flexibility of the chain after prolonged use. Installation, adjustment, and maintenance remain simple for riders and field mechanics.

• Pitch: 420
• Number of Links: 142
• Color: Steel / Steel
• Relative Lifespan (for 100 links): 200
• Weight: 0.75 kg / 100 links

Designed for urban, quad, motocross, and roadster environments, this EK CHAIN is aimed at riders looking for a robust and easy-to-maintain transmission part. Check the sprocket and crown ratio and the necessary length before installation to ensure proper shifting and tension.

Notable compatibilities: RIEJU MRT 50 SM (2025), FANTIC XM 50 PERFORMANCE (2025), BETA RR 50 MOTARD (2025). For optimal performance, regular lubrication and inspection of the links are recommended.