Car Turbo Whistle Modified Exhaust Pipe Sound Generator Imitation Sounder Car Whistle S Size M Size Motorcycle Tail Pipe Whistle

The product length measured is only the length of the whistle, not including the length of the mounting bracket. Regarding size selection: First, please measure the inner diameter of your car's exhaust pipe and compare it with the dimensions in the picture below to see which one fits your vehicle; if the installation size is suitable, try to choose a larger size. For cars with smaller displacement, choose a larger size; for cars with larger displacement, choose a smaller size because the whistle's sound relies on airflow, and larger size makes it easier to produce sound