All ROUSH Aero parts are made in house at ROUSH manufacturing facilities in the USA. The plastic is molded with high-pressure injection and is designed using Ford's own CAD data for optimum quality and fit to ensure a quick and easy installation. There's no need for sanding, trimming or cutting and high-quality exterior mounting tape is included for painless installation. ROUSH Rocker Aero Aids are available unpainted. Shop Roush Performance 2015-2023 Mustang ROUSH Rocker Winglets (Molded Black). Dominating performance. A dream for the road. Learn more now! 2015-2018 Mustang, Manual and Automatic Transmission, Coupe and Convertible 2015-2023 Ford Mustang