What top box do you have? My Trax top box sometimes makes an ugly rattling noise which originates from the studs the box clips onto. The rubber around the studs on the mounting plate wear and become dry.

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2014 XT660Z - Barrett pipe, DNA stage1.5, Barkbuster hand guards and handlebars, Pivot pegs, Teknik suspension, Guard-it engine protector combo, B&B rear rack, Trax topbox.