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 37mm-48mm 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: BlueSize: MDisplacement: 1600-2000ccWhistle Outter Diameter: 23mm / 0.9" (fit 37mm-48mm tail pipe)Whistle Length: 55mm / 2.2"Overall Size: 10.6*2.4*5cm / 4.2*0.9*2" (L*W*H)Net Weight: 0.075kg / 2.6ozInstallation:1. Loosen the screw on the turbo sound whistle2. Place the turbo 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.Packing list1*Turbo Sound Whistle