Actually, the purpose of replacing the stock bumper is not cosmetic, at least not in my case. The stock " bumper" is nothing more than stamped sheet steel covered in plastic wrap. It's barley able to withstand backing into a shopping cart without bending, not to mention backing into a tree or rock, or God forbid, getting rear ended. As for the clearence issue, I was able to drag the cover on my stock bumper cover on steep rock climbs. Never touched the Trail Tough bumper, especially the corners which angle up and out of the way while still protecting the rear end. Besides, Sheet bumpers, either plastic or steel, collect mud. Theres a reason you can see thru the tubes, water and mud flow out thru the gaps. 2 more cents.