Each tube rear bumper feature's smooth ground welds for an unbelievable look and further rust protection. This exclusive smooth grind process virtually eliminates small weld "pockets" that never seem to get full paint coverage and tend to rust over time. Each tube rear bumper feature's welded end caps rather than plastic end caps. Gone are the days of constantly replacing those lost tube bumper end caps after a long day on the trail. The rear bumpers have a larger 17" rear opening allowing the use of oversized tires (up to 31") on the factory spare tire mount. It also features an optional frame mounted hitch option that allows for lightweight towing (2,000lb towing weight, 200lb tongue weight capacity). Most other rear tube bumpers with integrated hitch boxes do not recommend towing therefore making the hitch box virtually useless.