K&N Airforce Pre-Cleaner

The K&N Airforce Pre-Cleaner is a specially designed foam filter wrap made to extend the service interval of your filter when used in very dusty conditions.

Red colored pre-cleaners are made from large, open cell foam that is oiled. They will stop 90% of the dirt, yet only add a 2% restriction to the airflow of the filter. Our red colored Airforce Pre-Cleaners are designed to be cleaned with K&N Cleaner or soap & water then re-oiled with K&N air filter oil.

K&N 25-3900 Product Specifications

Product Style: Filter Wrap - Universal
Wrap Type: Airforce Pre-Cleaner
Color: Red
Material Used: Foam
Width: 7 in (178 mm)
Length: 48 in (1219 mm)
Weight: 0.35 lb (0.16 kg)
Product Box Length: 8.5 in (216 mm)
Product Box Width: 5.5 in (140 mm)
Product Box Height: 15 in (381 mm)

If you are riding in dusty conditions wrap this around your air filter, and just keep rotating the dirty part away from the intake port