







EK/PBR 420SR Chain Kit 12/60 - Standard Sprocket
Designed for urban use, this EK CHAIN kit combines the SR range—known for its long-lasting flexibility—with a standard steel sprocket. The plates undergo a specific heat treatment that increases wear resistance without making unverified claims: it is a structural reinforcement aimed at extending the lifespan under common road and city conditions.
This kit is particularly suited for small urban displacement bikes and lightweight machines listed below, but it is also compatible with any motorcycle that has a pitch of 428 and a ratio of 12/60. Ideal for replacing a worn transmission and regaining smooth and reliable control for daily use.