YX140 Pit Bike PRO Gen4 Engine Z40 Cam Vortex™ Flywheel 1P56FMJ Oil Cooler VM26
Complete Genuine YX140 140cc engine (current year model), with the factory-fittedZ40 Camshaft upgrade. (For the engine-code nerds: this is the 1P56FMJ family style platform – not to be confused with the 1P60FMJ YX150-1 style engines.).