Manufacturer reference: 420SR-STL 122 SPJ
The EK CHAIN 420SR 420 chain is designed for riders seeking a reliable transmission for small displacement bikes and lightweight machines. Coming from the SR series, it features a heat treatment of the plates that increases their wear resistance while maintaining the chain's flexibility after miles of use. Designed for urban environments as well as light off-road, it is suitable for quads, motocross bikes, and compact roadsters.
- Pitch: 420
- Number of links: 122
- Color: steel / steel
- Relative lifespan (for 100 links): 200
- Weight: 0.75 kg / 100 links
Robust and understated, this chain offers an excellent weight-to-strength ratio for compact transmissions. Recommended motorcycles for this reference include the RIEJU MRT 50 SM (2025), FANTIC XM 50 PERFORMANCE (2025), and BETA RR 50 MOTARD (2025). For optimal longevity, adhere to the lubrication and tension intervals recommended by the manufacturer and regularly check for wear on the links and sprocket.