S550 Widebody Kit

The SHIROKAI 2018–2023 Mustang S550 Widebody Kit is engineered to enhance the visual appeal and stance of the facelift Ford Mustang S550 platform. This comprehensive 6-piece kit includes front fender flares, rear fender flares, side skirts, bumper endings, a front lip spoiler, and a ducktail spoiler, all manufactured from high-grade automotive ABS plastic. Each component is precisely CNC-cut from OEM 3D scan data, ensuring clean fitment and proportions that complement the factory body lines. This widebody kit adds +3.54 inches (9 cm) of width per side at the front and +4.33 inches (11 cm) per side at the rear, for a total added width of 220 mm across both axles. This increased width provides the necessary clearance for aggressive wheel and tire combinations, improving grip for both road and track applications. The kit is designed for the post-2018 S550 facelift with its redesigned front fascia, hood, and headlights. Installation is a bolt-on process utilizing included hardware, though drilling and rivnuts are required for proper mounting. The estimated installation time is 12–16 hours when performed at a body shop. For 2018–2023 Mustang GT and EcoBoost models with the stock bumper, the kit offers a plug-and-play fit with no major bodywork needed. The ABS plastic arrives ready for wrapping, though light sanding and primer are recommended for optimal paint results. Fitment details are specific: the kit is a direct, plug-and-play fit for 2018–2023 Mustang GT and EcoBoost models. For 2018–2023 Convertible models, the kit fits but the ducktail spoiler is excluded due to a different trunk lid geometry. The 2018–2020 Shelby GT350 models require minor front bumper modifications to integrate cleanly with the flares. Pre-facelift 2015–2017 S550 Mustangs and S197 models (2005–2014) require different widebody kits. Owners benefit from lifetime technical support from the manufacturer. The kit is designed to maintain factory body lines while delivering a bold, aggressive, and planted look, making it a standout upgrade for S550 owners seeking a distinctive aesthetic.