RK Standard (M) M420 is a durable non-sealed 420 drive chain built for smaller-displacement bikes, combining strength and smooth power transfer. Heat-treated and shot-peened components help maximize wear resistance and reliability.
The RK Standard (M) M420 chain is a dependable 420-size drive chain designed for consistent performance on smaller-displacement motorcycles and off-road bikes. Built from heat-treated medium carbon alloy steel and finished with shot-peening for added strength, it’s a solid choice when you want reliable power transfer, good durability, and easy installation.
Its non-sealed design keeps the chain lightweight and efficient—ideal for applications where low drag and straightforward maintenance matter. With solid rollers and four-point pin riveting, the M420 is made to handle regular riding and everyday drivetrain demands while maintaining a smooth, predictable feel.
