help! I need a new chain!

The bottom of this page has a chart showing the sizes of different chains. There are 5 different sizes that have 1/2" pitch and .306 rollers. If you have a thick rear sprocket you probably can't use 410 and if you have clearance issues #41 and .420 maybe out too. I've heard of guys finding 10' rolls at Lowes. Tractor Supply Co. if you have one. Maybe Harbour freight. Otherwise a motorcycle shop but you'll pay more. .415 is also known as #42 and #42H (heavy)

Azusa Engineering, Inc. Online Catalog - Roller Chain, Motorcycles, etc.
 
gasbike.net in the parts section

or a good bike shop can get you one

I'm running a 415H bmx chain it seems a little better than the chinese chain.
 
#41 roller chain will work as the drive chain for most of the Chinese 2-strokes if you can find a source.
 
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