Engineered from a clean sheet, every part of this cover is an all new one piece MaxFlow design. It is NOT a repurposed factory or 661 cover, but rather a totally new design that maximizes airflow while still keeping the functional lines of the original. It fits perfectly using the stock alignment locations and mounting knob. The rain and brush baffle or cylinder shroud will need to be customized to suit each users cutting situation. Please read up on the instructions on how to modify the baffle.
High flow, washable air filters for Professional Stihl® MS500i Chainsaws with the polyolefin HD2 filter. High flow, washable kit includes everything you need to convert your saw: You can select two foam elements, (green for standard cutting or white for extreme cutting conditions), MaxFlow cage with Grey lid, and an OEM compatible close fit, baffled, rain and brush cover.
MaxFlow Filters are the ONLY aftermarket filters that are 100% USFS approved. Don't risk being shut down on Forest Service property. Reference the (MSE) SAG HS type A.
MaxFlow air filters trap the smallest particles while flowing full CFM for up to 30 times as long as stock air filters. This helps your saw breathe better during prolonged use in adverse conditions, resulting in smoother running and more power. Unlike pleated filters, MaxFlow filter elements are washable and re-usable so they last longer and cost less. Foam elements do require the use of foam filter oil (sold separately).
For more than 30 years MaxFlow filters have featured only ONE PIECE elements with no glued seams to fall apart. No seams mean longer lasting elements with no chance for dirt to penetrate. Don't be mislead by glued foam where gas and vibration causes the glue to fail.