CG125 motorcycle GBS engine assembly, the whole machine specifications and CG125 model completely match, directly replace the original engine, no need to modify the frame, transmission interface, ready to use; Before delivery, the assembly and commissioning of cylinder block, gas distribution and transmission system have been completed, including carburetor, ignition system and other full sets of components, which are directly loaded on hand; GBS model has optimized the gas distribution and fuel system in detail, resulting in smoother power output and more accurate fuel consumption control.