2018-21 Mustang GT 5.0L, 3" Catback Dual Exhaust with H-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. Featuring, the latest in active exhaust technology, our in-house engineered valve bolts directly to the factory electronics to allow for all exhaust modes. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. This system features dual-mode mufflers with a 3" valve assembly, with straight through "Track" mode and chambered "Quiet" mode. This is a quad tip exhaust, exiting through our 4" slash cut conical double wall polished tips. Includes hangers and clamps and mates to the factory connection point. This system is designed for vehicles with the 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. Not confirmed to fit convertibles.