
EK/PBR 420SR 12/48 Chain Kit - Standard Sprocket: a transmission set designed for urban mopeds. The SR range from EK CHAIN combines a design that maintains chain flexibility after prolonged use with plates subjected to a specialized heat treatment process to enhance durability.
Designed for urban life and small displacement uses, this kit is aimed at 50cc riders looking for a reliable transmission and easy installation during maintenance. The 420 pitch and 124 links provide compatibility suited for the listed RIEJU models (Spike and RR 50). Ideal for renewing the final transmission, it includes essential elements: front sprocket and rear sprocket sized 12/48 for the original gearing.