Crankshaft in high quality manufactured in Europe for Chinese 50cc 4-stroke engines and 4-stroke 50cc Kymco. High quality con rod tin much better quality than that used in the original engine. Strength and durability of the crankshaft thereby increase significantly. Top Racing crankshafts correspond to the size and shape to the original. Comes with pre-pressed crankshaft bearings. First crankshaft of improved bearing quality. Oil pump drive with 16 teeth. Made in Europe .