Here's a Lifan 140 cc pitbike motor. It runs but has an issue. It starts right up and runs good, but make a mettallic rattle which sounds like a piston slap. Got it replaced under warranty and got to keep it. Only put about 300 miles on it on my CT70. Still made good power when I removed it. Clutch like new, 4 up pattern. Good to fix or for parts. Carb, manifold, kickstart arm, shift lever, or CDI not included.  Buyer pays $40 fixed shipping cost to lower 48 states, though local pickup is welcome. Thanks for looking.