Set of 2 filters Short #2155 & Long #2149 K&P Stainless Steel Reusable Oil Filters. Superiour filtration for your KTM LC4 400/600/620/640 1992-2008 models. These filters are the short & long internal engine case filters used in these models. Depending on model you may also require a #2150 filter that is used in the remote canister mounted behind the cylinder or an #S1 spin on filter mounted at the front of the engine. Filtration 35 microns absolute, greater surface area & over 7 times the flow rate of paper filters. Will not wear out & guaranteed for life. Easily cleaned & monitor your engine for problems as you do so. Genuine USA Made by K&P Engineering, the Original & The Best.