Gibson is a huge name in the truck and off-road exhaust world, and their high-quality kits come in all different shapes and tip configurations to meet your needs or specific sense of style. Gibson's only real problem is they pride function over form, which is why they teamed up with Metal Mulisha® to come up with one of the toughest-looking and best-sounding cat-back exhaust systems on the planet. These huge 4" diameter kits come topped off with an absolutely aggressive and massive exhaust tip with a black ceramic finish and adorned with the Metal Mulisha® skull logo. The Metal Mulisha® cat-back kits from Gibson instantly make your truck look like one of the meanest things on the road and give your motor an excellent, deep exhaust note to go along with it.