Features: Make your vehicle sounds like a turbo vehicle After 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 quality Made of high quality aluminum light weight and durable. Easy installation Easy to install on the cars tailpipe. This whistle can be installed under 2 minutes Universal use M 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 Whistle Material: Aluminum + iron Quantity: 1pc Item Color: black. M size is suitable for the displacement of 1.6-2.0 the exhaust pipe diameter is 37-48 mm X size is suitable for 2.0-2.4 displacement exhaust pipe diameter 44-55 mm XL size is suitable for displacement above 2.4 exhaust pipe diameter 56-85 mm Installation: 1. Loosen the screw on the turbo sound whistle 2. Place the turbo sound whistle body inside the exhaust muffler with the larger opening facing the inside of the muffler 3. Screw the screws on the turbo sound whistle to tighten the item so it does not fall off while driving 4. Professional installation is always recommended products damaged through self-installation will not be refunded. Packing list 1*Turbo Sound Whistle Specification: Color: red blue gold silver black. Material: aluminum alloy. Size: S: Length 10.5cm*Width 2cm; M: Length 10.7cm*Width 2.5cm; L: Length 11cm*Width 3cm; XL: Length 11.5cm*Width 3.5cm; Note There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. MODEL:B627EF91756YH0169