Some of the kits still come with the 410 chain and from what I understand they pretty much all used the thinner chain in the begginning but 410 chain is very weak in comparison to the 1/2 X 3/16 chain, so I'm glad we can use heavier chain myself, I would have probably already had a lot of broken chain issues by now with my mod'd engine is I were having to run 410/ standard bike chain.
Originally Posted by Mike B
I hate that 415.
Why don't they just put a thinner engine sprocket on and use BMX chain?
Life would be better.