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125 pit bike chain problem

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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?

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

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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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