Deliver a impressive sound, Offers the best of both worlds through its capability to produce an aggressive exhaust note under acceleration, and a more subdued sound for recreational users, with this kit the Unique sound acoustics and performance are exceptional. Made of CNC machined 6061 T6 aluminum and finished in a beautiful anodized red, blue, green , blue coating. Saltwater tested. Lightweight, rust resistant. Stainless steel bolts included. Made from the finest materials, Includes all necessary parts and hardware for easy installation.