This GS machine itself does not vibrate much, so all the screws that fix the engine can be tightened first, especially the thicker fixing screws behind the engine. If the vibration is still great after tightening the screws, there is no good way. The engine with increased displacement vibrates more than the original model, which may also be related to the design matching of the frame. If it is an engine problem, changing the engine can alleviate it, but if it is not an engine problem, it is useless to change the engine. If the vibration is most obvious only at the speed of 70 kilometers, it should be caused by the * * * earthquake. This situation cannot be completely solved. * * * Earthquakes always exist, even if it is not at this speed, it will be at other speeds. In fact, this kind of car does not attach great importance to comfort, but more emphasis is on fun. Many of Suzuki's GS series engines are interchangeable, but if you change the engines yourself, you can't have the annual inspection. According to the requirements, you must apply to the vehicle management office first. Of course, if you don't plan to have an annual inspection, that's fine. Jinan Qingqi should not falsify the displacement. Generally, the engine of GS200 is obviously superior to 125 in starting, climbing and accelerating, but the top speed may not be much faster. The new car is still under warranty. If you have any questions, you should go to the after-sales inspection consultation. Any problems caused by quality and design can be guaranteed free of charge.