Originally Posted by 2door
If by "old chain" you mean the kit supplied #415, no you cannot connect the two. There are differences and the master links are not interchangable/compatible.
Go back to where you bought the #41 and either buy a six foot length (preferable) and make a new chain, or a couple of master links and two more feet of chain.
Personally I wouldn't run two master links but it can be done in a pinch if money is an issue.
i'm a motorcycle guy and have typically used heavier chains. way heavier. where does one procure this " #41" chain you speak of?