428 chain master link for scooters, motorcycles, dirt bikes, go-karts, and ATVs.
Master links are used to connect each end of an open loop to create a closed loop chain (also known as a fixed length chain). You can also use a master link to repair chains with a busted link, just remove the bad link and replace it with a master link.
Unfortunately, we have not confirmed compatibility with that model. If the dirt bike uses a size 428 chain, then this would be compatible. If you're unsure what size chain it has, we'd recommend reviewing the owner's manual, performing further independent research, or contacting the manufacturer.