125 pit bike chain problem

Hi new to the forum, anyways I got a 125 offbrand pit bike a couple days ago and every time I try to hit a berm going to the left the chain pops off. every time. the sprockets are worn down a bit and I have no chain guide. is that why?

make sure your chain isnt too loose.  and if your sprockets are worn replace them. also check wheel bearings and swing arm bearings

My brother has a Coolster 125cc pit bike and the same thing happens to him. Try to find a chain guid from a klx110 or something like that.

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