DID 420D is a standard, non-sealed roller drive chain designed as a direct replacement for bikes that originally use non O-ring chains. A solid choice for lightweight off-road and small-displacement applications where simplicity and reliable power transfer matter.
DID 420D Standard Chain is a classic, non-sealed roller drive chain built for straightforward, dependable power transfer. If your bike was originally equipped with a non O-ring (non-sealed) chain, this model is designed to match that setup without unnecessary complexity—making it a practical replacement for smaller off-road and street applications (up to 85cc).
Because it uses a conventional (non-sealed) design, it’s easy to service and ideal for riders who want a simple chain solution and don’t require O-ring/X-ring sealing. With a widely recognized chain life index rating of 100, it’s a proven standard used across many applications.
