For YX 140cc 149cc engine, the engine code No.: 1P56FMJ,1P56FMJ-5. It's the genuine parts from YX factory. This engine is widely used on many Chinese Pit Dirt Bikes. Shaft length: 200mm. For Braaap, Atomic, Pitpro, Pitster Pro, DHZ, SSR, Piranha and many more.
