Motorex Racing Bio Dirt Remover The Motorex Racing Bio Dirt Remover is an innovative powder cleaner meticulously crafted for off-road motorcycles and ATVs equipped with reusable foam air filters. Engineered with powerful active ingredients, this cleaner efficiently eradicates stubborn dirt, ensuring your vehicle performs at its peak. Ideal for enthusiasts demanding excellence in maintenance and performance, the Bio Dirt Remover is the go-to solution for keeping your air filters in pristine condition. Features: In powder form Rapidly biodegradable Removes even the most stubborn dirt quickly and completely For reusable foam air filters Fast and easy to use Rinse under running water Environmentally friendly