2018-21 Mustang GT 5.0L, 3" Catback Dual Exhaust with X-pipe. Improve sound and performance on your Mustang GT with this Redline catback exhaust from Stainless Works. Redline series, designed to get the most aggressive sound out of your GT, we've designed these mufflers to maximize the volume and tone of that 5.0L V8 while still eliminating any drone in the cabin. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. This is a quad tip exhaust, exiting through our 4" slash cut conical double wall polished tips Includes hangers and clamps. This system has a performance connection that mates with Stainless Works headers. This system is designed for vehicles without Active Valve Performance Exhaust. Mill finish, All TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the USA. This system is designed for standard vehicles without the valve. Not confirmed to fit convertibles.