MBRP Stainless Steel XP-Series Exhaust Resonator Delete X-Pipe for 2020-2022 Shelby GT500 Mustangs. This MBRP Resonator Delete X-Pipe (S7219409) will dramatically increase the sound level and attitude of your S550 GT500 Mustang. By replacing the resonator with a free-flowing X-pipe, you increase exhaust flow, remove weight, and gain an aggressive tone all at once. Features and Benefits: - Mandrel Bent for Maximum Flow - No Welding or Tuning Required for Install - Reduces Back Pressure and Increases Exhaust Flow - Lighter than Factory Section and OE Resonators - Includes ALL Necessary Clamps This relatively simple mod has a great payoff for improving the sound of your Shelby. The factory resonator is designed to restrict the sound level of your Shelby, and in doing so it also restricts exhaust flow. This mandrel bent X-pipe will solve both problems at once, and requires no welding or special tuning for proper installation. Vehicle Fitment: - 2020-2022 Shelby GT500 Mustang Please Note: Will NOT fit any other S550 Models. Tech Tip: Installation will require cutting of the factory exhaust piping. Once the modifications have been made to the factory exhaust system, Installation is a simple bolt-in procedure. California Residents: Proposition 65 WarningLearn More