



This part being universal, it may require adaptations
Standard Series Transmission Chain RK — manufacturer reference 420SB-136-CL. Designed for off-road machines (enduro, motocross), this standard M420 chain is made from medium carbon alloy steel and features heat treatment on all components. Each link and roller is shot-peened to enhance fatigue and wear resistance in muddy and demanding conditions.
This Standard Series chain is aimed at riders looking for a robust and reliable part for their off-road motorcycle's transmission. Its traditional construction and solid riveting ensure a reliable fit on standard sprockets and crowns; however, it is recommended to check the tension and alignment after installation and to ensure regular maintenance (cleaning, lubrication) to maintain the longevity of the assembly.
Reference: 420SB-136-CL — RK brand. Suitable for motocross and enduro applications on models compatible with a 136-link chain.