ROUSH Performance's Resonator Delete X-Pipe is an affordable way to eliminate your factory resonator to get amazing race-inspired sound. Our X-Pipe increases flow through your Mustang GT exhaust system for maximum horsepower and torque. The Resonator Delete X-Pipe is a quick and easy way to improve the sound and performance of your Mustang on the road. The 2.5-inch X-Pipe assembly is made from high-grade mandrel-bent stainless steel to ensure maximum flow with less back pressure and long-lasting durability. The system is designed and engineered using OEM vehicle CAD data to ensure perfect fit.