Corvette VideosVIDEO: Corvette C8 Z06 With Fabspeed Valvetronic Cat-Back Exhaust & Sport CatsMark Leofe Capayas·4 years ago·Last updated:2 weeks ago In this video, Fabspeed compares the sound of stock C8 Z06 against their Sport Cats and Valvetronic Cat-Back Exhaust. Watch and enjoy!