Yellow 125 This is my 125cc pit bike. The original dirt bike was a Chinese Yamaha pw80. I bought a Lifan 125cc engine and swapped it. This bike runs great it has a performance carb on it. The engine has 4 gears with a clutch and you can wheelie this thing great. Top speed is 55 mph. It also has a new muffler on it and the brakes work great and shifts great as well. My son has outgrown it. $800 obo