
EK/PBR 420SR Chain Kit 14/48 - Standard Sprocket
Designed for urban use and suitable for small displacement bikes, this EK CHAIN 420SR chain kit combines strength and flexibility for the drive of 50cc and urban supermotards. The SR series benefits from a specific heat treatment on the plates to enhance wear resistance while maintaining appreciable flexibility after many kilometers — a key advantage for frequent stops and accelerations in urban environments.
Designed to enhance the transmission without compromising reliability, this kit is particularly suitable for urban machines and lightweight touring bikes. Please check compatibility with your model before installation.
Common compatibilities:
Manufacturer reference: Not provided.