Improve sound and performance on your 2020 GT500 with this Redline catback from Stainless Works. We?ve engineered a drone free aggressive muffler tuned specifically for this improved coyote engine from Ford. Featuring the latest in active exhaust technology, our in-house engineered valve bolts directly to the factory electronics to allow for all exhaust modes. From the closed valve ?Quiet? mode, to the chambered ?Normal? mode and to the wide open straight through design on the ?Track? mode.