Vehicle sounds like a turbocharged car: with this turbo sound whistle fitted, the pressure exiting the exhaust will make your vehicle sound like a turbocharged car with a turbo system or exhaust valve. HIGH QUALITY: Made from high quality aluminium, it is light weight and durable. EASY TO INSTALL: Easy to install on the exhaust of your car. This whistle can be fitted in 2 minutes with the universal M size and is widely available for all models. Fits 37mm-48mm tailpipes. Note: The Turbo Sound Whistle is not suitable for extremely curved tailpipes. Please ensure that the exhaust pipe is large enough and long enough to accommodate this turbo sound whistle. To install. 1. Loosen the screws on the turbo sound whistle 2. Place the body of the Turbo Sound Whistle inside the exhaust muffler, with the larger opening facing the inside of the muffler 3. Tighten the screws on the Turbo Sound Whistle to tighten the item so that it will not come off when driving 4. Professional installation is always recommended, no refunds will be given for damaged products installed by yourself. Specifications: [Product Material] Aluminium alloy ColorBlue/red/black/silver/gold Gross weightS0.071KG M0.081KG L0.108KG XL0.136KG Net weightS0.070KGM0.080KG L0.108KG XL0.135KG Applicable modelsUniversal [Accessories List] 1*Turbo Tail Whistle L1*Wrench 1*Thimble Package Included: 1*Turbo Tail Whistle 1*L spanner 1*Thimble