Large KN Sport air filters in 4,375 "- for turbo etc.
Here are very large air filters for mounting on eg turbochargers that need plenty of air.
KN air filter with great effect
If you need to make lots of power on your race car, it also requires a large air filter that can float lots of air without the great resistance. Below you will find the KN filter with large connection which is often used for cars with a large turbo mounted. To keep the effect up for the entire filter life, you can buy a cleaning kit for kn filter , it removes dirt and dirt and included oil which the filter should have again after washing.
Connecting pipes to these air filters are 111mm. / 4,375 "