I have had lots of problems with aluminum- now dont get me wrong it all depends on your riding, aluminum thickness, etc. but I got tired of pounding out dents. I had a buddy fab a steel 1/8" skid on my 500 and have had zero issues. I do run the uhmw sss offroad a-arms and have to say at least so far they have held up well- but as alluded to above they are not cheap and the full skid is over 500 dollars so I would have to be pretty sure it was the cats meow before I would drop that kind of cash- for now, happy with steel!!!