Bicycle Exhaust Sound System With 6 Adjustable

Make your bicycle sound like a real car engine Exhaust clamp is compatible with most bicycles 6 motor sound cards produce 3 engine sounds. Sound changes depending on the speed you go Fun cycling accessory for old and young ke Tips: Do not go behind the car after installing the sound card， it may cause damage to the sound card! NOTE: The bicycle exhaust system is plastic material， not metal. Fits most bikes of Bicycle Motocross( BMX)， and Mountain bike. It will can not install if the site is not cylindrical or too thick. Can not make your bike faster. The must be done by adult， please be careful to install. : Stuck in the side of the bike (the side with no chain). Install the Motocard. Install the bicycle exhaust system. Install the tail. finish. Warning: The product package contains small parts， please keep it， do not let young children under 3 years of age contact to prevent swallowing and other risks. Special reminder: must be completed by adults， open the package for Please be careful to prevent the operation caused by improper injury. With an extra 3 cards， you can cut and create a sound card at your own discretion. The card is thinner and can be used together. You can have an unexpected sound by hand-DIY card. Material: Plastic Size: 38.5*8*8cm/ 15*3.15*3.15inch colour: Photo Color Package Contents: 1 * exhaust pipe 1 * Host card holder 6 * Sound effect Card 2 * assembly screw 1 * hexagonal wrench 1 * Tied band 1 * Sticker 1 * Chinese and English instructions Only the above package content， other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.