DID 420D is a standard non-sealed 420 drive chain designed as a reliable replacement for bikes that originally used a non O-ring chain. Lightweight and easy to service, it delivers dependable power transfer for smaller-displacement setups.
The DID 420D Standard Drive Chain is a straightforward, dependable roller chain built for riders who want a solid OEM-style replacement without the added complexity of sealed (O-ring/X-ring) designs. It’s ideal for smaller-displacement bikes where low weight, easy maintenance and consistent power transfer matter most.
If your bike was originally equipped with a non O-ring chain, the 420D is a correct-fit style upgrade that keeps drivetrain performance predictable while making routine cleaning and lubrication simple. With a clip-type master link, installation and removal are quick—perfect for regular gearing changes or trackside service.
