S size is suitable for 1.0-1.6 Displacement, exhaust pipe diameter 32-43mm <about 67G>

M size is suitable for 1.6-2.0 displacement, exhaust pipe diameter 37-48mm <about 87G>

L size is suitable for 2.0-2.4 Displacement, exhaust pipe diameter 44-55mm <about 102G>

XL is suitable for displacement above 2.4, exhaust pipe caliber 56-85mm <about 126g>

[Product introduction]]

name: car modification turbine whistle exhaust pipe acoustic generator imitation sound device turbine exhaust imitation sound whistle

specifications: Small size medium large size 4 models

the above price is small size. For other specifications, please contact customer service!

It is easy to install, beautiful and elegant, very fashionable, and inexpensive. It is used to decorate your car.

This product has 4 models with small size medium and large sizes.

The length of the product is only whistle, excluding the length of the holder.
About Size Selection: first, please measure the inner diameter of the tail pipe of your car,
compare with the size in the picture below to see which one is installed in your own car;
on the premise that the installation size is appropriate, try to choose a larger size.
For cars with small displacement, you need to choose a larger one. For those with large displacement, you can choose a larger one than small size, because the principle of whistle sound is based on air flow. For those with large displacement, the larger the whistle is, the easier it is to make a noise.