Inside the cylinders there is a fire when the engine is running and the exhaust gasses coming out heat up the metal. If this is a homemade dirt bike make the exhaust pipe routed away from you as much as possible and add a guard around the outside of the pipe.
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Inside the cylinders there is a fire when the engine is running and the exhaust gasses coming out heat up the metal. If this is a homemade dirt bike make the exhaust pipe routed away from you as much as possible and add a guard around the outside of the pipe.