Bicycle Sound Turbine Exhaust System Spokes Modified Motorcycle Engine Sound Effects Speakers Features: Bicycle exhaust system: The bicycle exhaust system not looks like motorcycle exhaust , the thing is when you start riding, the sound of the exhaust pipe, really like a motorcycle. When you ride it fast, sounds like adding the throttle. Design: Metal material, can effectively guarantee the exhaust pipe. Easy to use: Easy to install and can be fixed to almost any bike in a short time. Real Design: The bike exhaust system makes your bike look and sound like a real motorcycle. Ideal gift: This is a perfect choice as a toy and gift for your son or daughter, and any other person who really loves cycling, they are sure to love it. Product Description: Product size: 35*7.7*7.7cm/13.77*3.03*3.03in The package includes: Bicycle sound turbine tube *1 Mounting bracket *1 Sound card *3 DIY stickers *2 Accessories *3 Manual *1