Thanks! I bought 2 K&N filters for my v-strom, so I'll go with those.The stock oil filter is the same part number(52010-1053) as the filter for the Kawasaki KLX110 & all KX450s prior to 2016 so it's very common to find aftermarket versions that will fit our bike. I like the KN-112 from K&N Filters which is considered a very high quality filter that can be found online for around $7. There are also some high quality reusable stainless steel filters available if you prefer that sort of thing. Just stay away from the really cheap filters (for obvious reasons) and you should have plenty of good options to choose from.