Porsche 911 991.2 Carrera Carbon Fiber Rear Diffuser (Quad Exhaust) - (2016-2018)Enhance Your Porsche 991. 2 Carrera with a Quad Exhaust Carbon Fiber Rear Diffuser (20162018) Transform the rear end appearance of your Porsche 991. 2 Carrera with our high performance quad exhaust carbon fiber rear diffuser. Designed specifically for the 2016 2018 Porsche 911 991. 2 models, this rear diffuser perfectly complements quad tip exhaust systems, offering a sleek, aggressive look. Crafted from genuine 2x2 twill carbon fiber, its finished