All of the competitors involved in AMA Supercross must pass a sound test prior to the race. This helps the series control the sound of the race and it encourages the manufactures to make less noisy exhaust systems. As you will see many competitors fail and have to go back to the pits or change out the muffler. Many teams see this as an annoying distraction
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Негізгі бет FAILED Sound Test at AMA Supercross, Behind the scenes with Jason Anderson’s Husqvana and More
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