Westin Fey Surestep Deluxe XLT Rear Bumper # 21007-92230 is made of chrome-plated steel so it will hold up about as well as any other chrome-plated steel component on a vehicle. Since it isn't stainless or aluminum if the bumper is exposed to a lot of salt, either during winter or if you live near the ocean, then rinsing off the bumper will help it to last longer; which is true for any chrome part on a vehicle. view full answer...