I have done a search on this resulting in little to no information. We are taking delivery of a new BX1870-1 tomorrow. Just wondering if the air cleaner housing will accept a safety (inner air) element. We have a 2008 RTV1100 and it runs both, an inner and outer air filter element. We live in a dusty area and would like to have this extra protection. Will ask the dealer about this but wanted to ask here as well.