I took a look at the topic below about the Sr4 and the pipe options and noticed that the pipes come with an airfilter... I bought a set of the DP Remus Ti high mounts for my 800s... Although I can't exactly remember if I bought the package or just the pipes, I think I do remember pointing the the package with the airfilter and the pipes... I have yet to look under the tank to see if i got the airfilter installed or if I got somehting less then I thought I ordered.... Anyone know what the difference in appearance would be between the stock and one that would come in a package?