Piranha 140cc Pit Bike engine. Comes complete with Mikuni 22mm Carburetor, intake manifold, kick starter, shifter, ignition coil, wire harness, CDI. This engine utuilizes a standard outer rotor ignition. This engine is made by YX motors. The same company that produced Pitster Pro, OGM, and many others. 4 Speed, 4 up (0,1,2,3,4) gear pattern with clutch. Add on a 1.5" Uni air filter and a clutch cable to complete an entire power plant swap in your next project.