I ran K&N clamp-ons for a few years & was constantly cleaning them & wearing holes in the outerwears, after tie-downing them so they wouldn't melt on the stinger tubes. Bdbanshee has a good clamp-on setup that moves the filters back a bit. I got tired of dick'n with them & got a toomey 2:1 and will never use anything else. I've never had problems with it coming off & cleaning is a synch, and I'm using the same outerwear still that came with it. I would highly recommend the toomey 2:1 setup. But depending on your riding conditions, an in-airbox setup may work out better. I know a lot of people talk highly about the pro-flow setups, but I have no experience with them myself.