1. Adopts good quality materials, sturdy, waterproof, lightweight and durable for years of use
2. No battery required, manual power oriented, energy-saving and economic
3. The card can work with spoke to create exhaust sounds, and the sounds would be amplified by the pipe to make your bike sound like a real motorbike
4. With 6 sound making cards, adding much more fun to your cycling
5. Suitable for 16-22 inch bikes, easy to install and use

Spec:
Features:
Adopts good quality materials, sturdy, waterproof, lightweight and durable for years of use.
No battery required, manual power oriented, energy-saving and economic.
The card can work with spoke to create exhaust sounds, and the sounds would be amplified by the pipe to make your bike sound like a real motorbike.
With 6 sound making cards, adding much more fun to your cycling.
Suitable for 16-22 inch bikes, easy to install and use.
Specification:
Material: Plastic
Color: As picture shown
Size: Approx. 35.5*7.5cm/14*3inch
Weight: Approx. 258g
Suitable for 16-22 inch bikes
Package List:
1 x Exhaust Pipe
6 x Cards
1 x Pack of Fittings and Tools