Exhaust Pipe Oversized Roar Maker Car Auto Exhaust Pipe Loud Whistle Sound Maker FEATURES: After installed this product, the pressure blowing out of your exhaust will make your vehicle sounds like a turbo vehicle with the turbo system or blow off valve. Made of high quality aluminum, light weight and durable. Easy to install on the car's tailpipe. Installation: 1. Loosen the bolt on the Turbo Sound Whistle. 2. Insert the the Turbo Sound Whistle into the tailpipe. 3. Tighten the bolt so as not to fall off while driving. Notes: 1. Please make sure the tailpipe(Straight pipe) is big and long enough to contain the Turbo Sound Whistle. 2. Professional installation is always recommended, products damaged through self-installation will not be refunded. 3. Please check and re-tighten the bolt regularly. Specifications: Color: Red Material: Aluminum Alloy S Fit for 1.0-1.6(car displacement) 32-43mm(tailpipe dia) M Fit for 1.6-2.0(car displacement) 37-48mm(tailpipe dia) L Fit for 2.0-2.4(car displacement) 44-55mm(tailpipe dia) XL Fit for above 2.4(car displacement) 56-85mm(tailpipe dia) Note: The product is only suitable for direct exhaust pipes, and the bent exhaust pipe cannot be installed. Not the sound of a sports car Is the sound of the flute Package list: 2 x Auto-Grip Car Sound Maker