Integy is known for using cheap aluminum. There are a couple products that are okay to use but most you should really stay away from. I do not own a XS as of yet but have been reading up on them, but, just like it's big brother, if you are going to bash hard, stay away from aluminum suspension components besides shocks. One aluminum bends, it's junk. Plastic arms will bend back if not broken. Only upgrade what breaks. I hear the tires are not so good too.