Description : Why do some motorcycles roar like that? That he passes and it rumbles completely, you know what I don't think? How many times these are complete blows as it goes. Is it because of performance?
Last Answer : a) for some motorcycles it is a part of the image (typically HD) b) for some ´motorcyclists´ it is a part of the image (typically trumpet) For two-stroke, every lay intervention in the muffler is accompanied by a reduction in power.