You have a lot of choices where you can get one, just google it really and you can look at the countless pages of them that come up, or eBay has a lot of them also, I just pulled up eBay and typed in "spike air filter" and it brought up 335 items related to spike air filter. What you need to make sure of is that it's a 3 bolt Harley Davidson spike filter. What are you looking for, chrome or powder coat? 180 degree slotted or 360? Here's the link on eBay that I typed in that you can look at to get an idea, plus search the forum and see what you come up with to get an idea of what you like.