
EK/PBR 420SR Chain Kit 12/51 - Ultra-Light Sprocket
Designed for small displacement bikes and urban use, this EK CHAIN kit combines a 420 SR series chain with an ultra-light aluminum sprocket. The SR series maintains its flexibility even after many hours of service: the links benefit from a specific heat treatment that increases wear resistance without sacrificing the necessary flexibility for proper drive.
Ideal for urban environments and 50cc motorcycles, this kit is particularly suitable for BETA RRT 50 ENDURO models (2009-2011). When installed carefully, the EK sprocket/chain combination ensures smooth transmission and a predictable torque feel, essential for starts and acceleration in the city.
Brand: EK CHAIN — Manufacturer Reference: Not provided.