the box that has your air filter in it has 3 bolts in the bottom. take the nuts off and the air silencer will fall out. it is a big goofy looking black or dark grey thing that looks like a giant kidney or something. you have to replace the bolts to hold the bottom of your air box. i just ripped them off of the air silencer.(some have rubber boots around them). if you can reuse them go ahead. good luck. now buy a k&n filter.