The rear bumper is an important place to add protection when upgrading the armor on your Jeep. When off-road, your rear bumper is often slammed into rocks as you slide off of obstacles. A heavy duty bumper will help prevent damage to your vehicle and ensure you get home. A rear bumper can also offer additional features as well.
Some of the most common features you'll find in a rear bumper are additional recovery points, as well as integrated receiver hitches that can be used for towing (if they're properly rated for such) or carrying accessories such as cargo baskets or bike racks. A heavy duty bumper can also include provisions to carry a swing out tire carrier capable of supporting the extra weight of a larger oversized spare tire.