Its actually a piece of cloth reinforced rubber that is held on with a 1/2 wide u shaped metal piece. about 1/8 inch thick. you can probly find the material and slit it to the right width...there are kerf cuts on the corners so it bends with the bumper shape. i have 2 and there both worn out...i'll let you know if i find similar material....I was thinkind that the stuff they use on flat roofs would be good. my metal retaining pieces are pretty rusty so i'm looking for a replacement for that to. posibly the same pieces they use to hold the rubber down on flat roofs...if you need a pic of either give me a yell.