Chain on dirt pocket bike

[nevko05]

need some help finding a chain for a pocket dirt bike I believe is a 49cc, I tryied a 25 @ work that we used for some conveyors but it was just a little too big.
The back sprocket measures 1/4 pitch and 1/8 wide.
any local places where they sell parts?

[J Osh10]

I think northern tool sells chain

[nevko05]

just called them, and the guy was no help at all. I guess I'm gonna swing by there.