For extreme off-road use, there's nothing else like Bushwacker Cut-Out(TM) Fender Flares. Each set of Cut-Out(TM) Fender Flares is individually designed for your Jeep Grand Cherokee WJ, to maximize off-road wheel travel and maintain adequate tire coverage. That custom approach means a smoother appearance, greater strength, and easier bolt-on installation with tough stainless steel hardware. As the name says, Cut-Out(TM) Fender Flares require cutting body sheet metal to achieve maximum articulation and coverage for oversized tires (see the installation guide for your specific model for complete details) . Cut-Out(TM) Fender Flares are made from thick, warp-proof Dura-Flex(R) 2000 TPO, our own proprietary material, engineered for added durability and flexibility in severe conditions. Its UV protection guards against chalking, while its pro-grade matte black finish looks great as-is, or custom painted to create your own personal look. Cut-Out(TM) Fender Flares offer extreme performance with style to match.