Dominate off-road terrains with our Polaris RZR XP Gibson Exhaust Systems. Get an extra increase of 2-4 rear wheel horsepower, 3-5 more-foot pounds of torque and 2-3mph. With a Gibson non-packed muffler, you can guarantee a consistent level of sound and performance quality for the duration of your vehicles lifetime. Our exhausts maximize performance by utilizing a fully welded muffler design that can handle your off-road adventures by reducing the possibilities of breakage. Finished with a personalized black powder coated rear beauty plate and all necessary hardware to provide a hassle-free installation. USFS Approved Spark Arrestor. Gibson strives to provide top-quality products that are 100% made in the USA.