This may be obvious to some people but I was trying to figure out how to remove the bolts from the 3 piece spoiler to mock it up on my rear end. Hopefully this helps someone. Take two nuts and thread them both onto the bolt. Try not to thread the bottom nut all the way down so that it is easy to remove later. Tighten the top nut firmly against the bottom nut. You can now use an open wrench on the bottom nut to loosen the bolt. Once removed, you can remove the nuts from the bolt. Cheers!