Yz125 dies after 10min

Hello first post here thanks in advance for all the help. I have a 2000 yz125 and after about 10min of riding it will bog and die no matter how much kicking you do it still won't start you have to wait hours and it will start and ride perfect for another 10min. Supposedly a new piston 3 weeks ago and has a full doma racing pipe.

Sounds like carb problem. Or eletrical

My cr125 done the same check your carb ie... Floats, fuel needle and seat also make sure all valves are clear and carb is clean.

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