PRE-OILED AIR FILTER 850-09221 and this is the reason

and this is the reason why after endless tests on the bench

The cylinder is in the same performance range as the original part

2010 Harley-Davidson FLTRX Road Glide Custom

Great for motorcycles

you can install the unit on ramp-posts or in work bays

PRE-OILED AIR FILTER 850-09221 and this is the reasonEach Twin Air filter is pre oiled with Twin Air biodegradable foam filter oil, developed exclusively for Twin Air by Chevron Texaco. Independently tested by the most prestigious engineering lab in Germany and was found to be the superior filter oil on the market. Coarse open pore foam catches airborn dirt, grime and sand Fine open pore inner foam acts as second filter to trap the smallest particles while ensuring maximum air passage Adhesive