Twin Air delivers a classic Complete System with everything you need to maintain your Twin Air filter! Kit includes: Liquid Dirt Remover filter cleaner (4 liter): The classic Twin Air Liquid Dirt Remover is designed to wash filters oiled with Twin Air Liquid Power in the best possible way. Liquid Power Filter Oil (1 liter): Liquid Power filter oil is specially formulated to go on as a liquid for easy filter penetration. Solvents in the oil dissipate quickly; leaving a sticky, dirt gathering oil on your filter for superior protection. Contact cleaner: A perfect way to clean the filter oil from the filter cage, filter bolt, airbox, and airbox sealing ring. Rubber gloves. Twin Air cleaning tub with cages. Oiling tub.