The Muc-Off Biodegradable Air Filter Cleaner is a state of the art, professiol strength biodegradable cleaner which cleans and cares for your motorcycle filter. It rapidly breaks down the stickiest of oils, grease and the stiest grime on all foam air filters. It’s the hassle-free way to rapidly clean your foam filter and ensure you maximise your engine's horsepower. The unique combition of active ingredients is formulated to rip through dirt and oil without damaging the foam or glue. Our Air Filter Cleaner is solvent-free and easily washes off with water - making it an essential addition to your motorbike cleaning kit. The Muc-Off Air Filter Cleaner available in 1L and 5L sizes and is suitable use on motorcycles, including motocross bikes, as well as ATVs and other off-road vehicles with foam air filters. To use simply remove your filter and shake off any excess dirt. Shake the bottle of Air Filter Cleaner and pour enough to cover your filter into a container. Leave your filter to soak for 1-2 minutes. Wearing Workshop Gloves, massage the filter in the cleaner then squeeze (don't twist!) to wring out the cleaner. Next, submerge the filter in warm water and then thoroughly rinse with cold water. Allow the filter to fully dry before applying Muc-Off Air Filter Oil and refitting. For very stubborn grease and oil, simply repeat the application process until clean. IMPORTANT: Do not allow Air Filter Cleaner to dry on sensitive paintwork and always test on a small area before carrying out a full cleaning programme.