I bought a 2 stroke pocket bike last December from this company and broke down last March.The mechanic told me my bike is not a 2 stroke that i ordered but a 4 stroke one.The engine does not require oil mixing compared to a 2 stroke engine that cause it to broke down. I called the company but refused to change the wrong product they have sent to me, nor refund me. They are stating they don't have the 2 stroke anymore yet they never notified me so I can cancel my order, instead sent me a 4 stroke engine without telling me.