Features:Make your vehicle sounds like a turbo vehicleAfter installed this turbo sound whistle, the pressure blowing out of your exhaust will make your vehicle sounds like a turbo vehicle with the turbo system or blow off valve.Premium qualityMade of high quality aluminum, light weight and durable.Easy installationEasy to install on the car's tailpipe. This whistle can be installed under 2 minutesUniversal useM size, widely used for all vehicle models. Fit 32mm-85mm tail pipe.Note:The turbo sound whistle is not suitable for extremely curved tail pipes. Please make sure the tailpipe is big and long enough to contain this turbo sound whistle.Specification:Type: Car Turbo Sound WhistleMaterial: Aluminum + ironQuantity: 1pcItem Color: red, blue, gold, silver, black.S size is suitable for 1.0-1.6 displacement,exhaust pipe diameter 32-43 mmM size is suitable for the displacement of 1.6-2.0,the exhaust pipe diameter is 37-48 mmX size is suitable for 2.0-2.4 displacement,exhaust pipe diameter 44-55 mmXL size is suitable for displacement above 2.4,exhaust pipe diameter 56-85 mmInstallation:1. Loosen the screw on the turbo sound whistle2. Place sound whistle body inside the exhaust muffler with the larger opening facing the inside of the muffler3. Screw the screws on the turbo sound whistle to tighten the item so it does not fall off while driving4. Professional installation is always recommended, products damaged through self-installation will not be refunded.NoteThere might be a bit color distortions due to different computer resolutions.There might be a slight errors due to different hand measurement.