{"product_id":"2018-2023-mustang-widebody-kit-s550-gt-shirokai","title":"Ford Mustang Widebody Kit | 2018-2023 GT S550 | SHIROKAI","description":"\u003ch2\u003eKit at a glance\u003c\/h2\u003e\n\u003cp\u003eVehicle-specific 2018–2023 Ford Mustang S550 facelift widebody kit: plug-and-play fitment without weeks of sanding and cutting.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e 2018, 2019, 2020, 2021, 2022, 2023 Ford Mustang (S550 facelift). GT and EcoBoost: direct fit. Convertible: kit fits, ducktail spoiler excluded (different trunk lid). 2018–2020 Shelby GT350 \u0026amp; non-GT bumpers: different front bumper, test-fit the bumper endings first (no sanding or cutting). Not for 2015–2017 pre-facelift cars (separate 2015–2017 kit).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 3.5 mm automotive-grade ABS plastic — thick enough for durability, light enough to keep weight down. CNC-cut from vehicle-specific 3D scan data. Black in mass, wrap-ready.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdded width:\u003c\/strong\u003e front +3.54 in (90 mm) per side, rear +4.33 in (110 mm) per side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts included:\u003c\/strong\u003e front fender flares (2), rear fender flares (2), side skirts (2), bumper endings, front lip spoiler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDucktail spoiler:\u003c\/strong\u003e included only in the “Full kit with ducktail spoiler” configuration; also sold separately as the S550 Ducktail Spoiler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting hardware:\u003c\/strong\u003e not included, sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModifications needed:\u003c\/strong\u003e Direct fit on GT\/EcoBoost, no weeks of sanding or cutting. 2018–2020 GT350 and non-GT bumpers: test-fit the bumper endings first, no sanding or cutting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation time:\u003c\/strong\u003e 1–3 days at a body shop, excluding paint\/wrap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheels \u0026amp; tires:\u003c\/strong\u003e typically 19x10 wheels with 275–285 mm tires front and 19x11 or 20x11 wheels with 295–315 mm tires rear, depending on offset.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePaint prep:\u003c\/strong\u003e light sanding and primer recommended before paint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e Bursa, Turkey.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003eSHIROKAI 2018–2023 Mustang S550 Widebody Kit\u003c\/strong\u003e is engineered for the facelift Ford Mustang S550 platform, giving GT and EcoBoost builds a wider stance, stronger side profile, and more room for an aggressive wheel and tire setup — while still following the factory body lines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits 2018, 2019, 2020, 2021, 2022, 2023 Mustang GT\/EcoBoost (facelift S550).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is not just an overfender kit. Each SHIROKAI Mustang S550 widebody kit is CNC-cut from platform-specific 3D scan data for cleaner fitment, better proportions, and less fabrication drama during installation. Made from premium automotive ABS plastic, it brings the Kaiju feeling without turning the car into a random mess.\u003c\/p\u003e\n\u003ch2\u003eFord Mustang S550 (2018-2023) Widebody Kit — Quick Facts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e 2018–2023 Mustang GT and EcoBoost (plug-and-play), Convertible kit-only (spoiler excluded), 2018–2020 Shelby GT350 with a bumper check (test-fit first)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Automotive-grade ABS plastic, 3D-scanned and CNC-cut from OEM body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth added:\u003c\/strong\u003e +3.54 in (9 cm) per side front, +4.33 in (11 cm) per side rear — 180 mm total at the front and 220 mm total at the rear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall:\u003c\/strong\u003e 1–3 days at a body shop, plug-and-play for 2018–2023 GT\/EcoBoost with stock bumper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Front flares, rear flares, side skirts, bumper endings, front lip spoiler; rear ducktail spoiler only with the “Full kit with ducktail spoiler” configuration. Mounting hardware is sold separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e See the current price for your selected configuration above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for:\u003c\/strong\u003e Post-facelift S550 with redesigned hood, headlights, and front bumper geometry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping:\u003c\/strong\u003e Worldwide delivery. Shipping is calculated for your address in your selected currency at checkout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s in the Ford Mustang S550 Widebody Kit\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFront fender flares\u003c\/li\u003e\n\u003cli\u003eRear fender flares\u003c\/li\u003e\n\u003cli\u003eSide skirts\u003c\/li\u003e\n\u003cli\u003eBumper fender endings\u003c\/li\u003e\n\u003cli\u003eFront lip spoiler\u003c\/li\u003e\n\u003cli\u003eRear trunk spoiler — only with the “Full kit with ducktail spoiler” configuration\u003c\/li\u003e\n\u003cli\u003eMounting hardware is sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot your year? 2015–2017 vs 2018–2023 — how to tell\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e2015–2017 (pre-facelift):\u003c\/strong\u003e sharp three-piece LED headlights with the vertical “gills”, flat hood with no vents, taller front bumper opening. \u003cstrong\u003e2018–2023 (facelift):\u003c\/strong\u003e slimmer lower-set headlights with tri-bar LED DRLs, hood with twin heat extractor vents, lower and wider bumper grille.\u003c\/p\u003e\n\u003ch2\u003eWidth \u0026amp; Specs\u003c\/h2\u003e\n\u003cp\u003eFront fenders add \u003cstrong\u003e3.54 in (9 cm) per side\u003c\/strong\u003e, rear fenders add \u003cstrong\u003e4.33 in (11 cm) per side\u003c\/strong\u003e, measured from the stock arch — run wider wheels and tires for more grip on road and track.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-grade automotive ABS plastic\u003c\/li\u003e\n\u003cli\u003eBlack in mass — wrappable straight out of the box (light sanding + primer recommended for best paint result)\u003c\/li\u003e\n\u003cli\u003eVehicle-specific panels; professional test fitting and installation recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFord Mustang S550 Widebody Kit Fitment Guide (2018–2023)\u003c\/h2\u003e\n\u003cp\u003eConfirmed fitment for \u003cstrong\u003e2018, 2019, 2020, 2021, 2022 and 2023 Ford Mustang\u003c\/strong\u003e:\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eFitment\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018–2023\u003c\/td\u003e\n\u003ctd\u003eMustang GT\u003c\/td\u003e\n\u003ctd\u003e✅ Plug \u0026amp; Play\u003c\/td\u003e\n\u003ctd\u003eVehicle-specific fit; test fitting and drilling are required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018–2023\u003c\/td\u003e\n\u003ctd\u003eMustang EcoBoost\u003c\/td\u003e\n\u003ctd\u003e✅ Plug \u0026amp; Play\u003c\/td\u003e\n\u003ctd\u003eVehicle-specific fit; test fitting and drilling are required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018–2023\u003c\/td\u003e\n\u003ctd\u003eMustang Convertible\u003c\/td\u003e\n\u003ctd\u003e⚠️ Partial fit\u003c\/td\u003e\n\u003ctd\u003eKit fits, ducktail spoiler excluded (different trunk lid)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018–2020\u003c\/td\u003e\n\u003ctd\u003eShelby GT350 \u0026amp; non-GT bumpers\u003c\/td\u003e\n\u003ctd\u003e🔧 Bumper check\u003c\/td\u003e\n\u003ctd\u003eDifferent front bumper: test-fit bumper endings first, no sanding or cutting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015–2017\u003c\/td\u003e\n\u003ctd\u003eMustang S550 pre-facelift\u003c\/td\u003e\n\u003ctd\u003e❌ Different kit\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005–2014\u003c\/td\u003e\n\u003ctd\u003eMustang S197\u003c\/td\u003e\n\u003ctd\u003e❌ Different kit\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eWhy S550 Owners Love It\u003c\/h2\u003e\n\u003cp\u003eAll you need is steady hands and a heat gun — the kit is plug-and-play on GT\/EcoBoost, with no weeks of sanding or cutting. With a growing community of SHIROKAI Mustang owners, this S550 kit became an absolute best seller and delivered strong results. If there’s a Mustang with a SHIROKAI kit at a show, it gets attention and love. Fitment is one of the biggest strengths of this \u003cstrong\u003ewide body S550\u003c\/strong\u003e setup — SHIROKAI is known for parts that fit straight out of the box, so you spend less time in the shop and more time driving. Whether you search for a \u003cstrong\u003emustang widebody\u003c\/strong\u003e, a mustang wide body build, or an S550 body kit, this keeps clean bodylines with a bold, planted look.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAutomotive-grade ABS plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturing\u003c\/td\u003e\n\u003ctd\u003eCNC-cut from OEM 3D scan data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront flare width\u003c\/td\u003e\n\u003ctd\u003e+3.54 in \/ +9 cm per side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear flare width\u003c\/td\u003e\n\u003ctd\u003e+4.33 in \/ +11 cm per side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal added width\u003c\/td\u003e\n\u003ctd\u003e180 mm total at the front; 220 mm total at the rear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponents\u003c\/td\u003e\n\u003ctd\u003eKit components: front flares (2), rear flares (2), side skirts (2), bumper endings, front lip spoiler; ducktail spoiler only in the full-kit configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003ePlug-and-play fitment on GT\/EcoBoost — no weeks of sanding or cutting. Rivnut mounting; mounting hardware not included (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstall time\u003c\/td\u003e\n\u003ctd\u003e1–3 days at a body shop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePaint prep\u003c\/td\u003e\n\u003ctd\u003eLight sanding + primer recommended for best finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWrap compatibility\u003c\/td\u003e\n\u003ctd\u003eYes, surface ready out of the box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible vehicles\u003c\/td\u003e\n\u003ctd\u003e2018–2023 Mustang GT\/EcoBoost (plug-and-play), Convertible (kit-only), 2018–2020 GT350 (bumper check)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody generation\u003c\/td\u003e\n\u003ctd\u003eS550 facelift (post-2018 redesigned front fascia)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of manufacture\u003c\/td\u003e\n\u003ctd\u003eTurkey (Bursa)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eLifetime tech support from manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor best results, professional installation is recommended. The finish wraps from the box (light sanding + primer for paint). Every Ford Mustang S550 widebody kit is built for style, function, and quality — the bold flares and precise fit take your Mustang to the next level.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWill this kit work on my Mustang Convertible?\u003c\/h3\u003e\n\u003cp\u003ePartially. The flares, side skirts, lip, and bumper endings all fit a 2018–2023 Convertible identically to the Coupe. However, the ducktail spoiler is excluded — Convertibles use a different trunk lid geometry that the spoiler doesn't match. Convertible owners typically order the kit without the ducktail spoiler option at checkout.\u003c\/p\u003e\n\u003ch3\u003eWhat about Shelby GT350 fitment?\u003c\/h3\u003e\n\u003cp\u003eThe GT350 (produced 2018–2020) uses a different front bumper than the standard GT, so we recommend a quick test fit of the bumper endings before install. No sanding or cutting of the flares, skirts or spoiler; all other panels fit identically to the GT. Note: GT350 production ended in 2020 — for 2020+ Mustangs above the GT, the GT500 uses a substantially different front-end and is not covered by this kit.\u003c\/p\u003e\n\u003ch3\u003eIs this kit different from the 2015–2017 S550 kit?\u003c\/h3\u003e\n\u003cp\u003eYes. The 2018 facelift Mustang received a redesigned hood, headlights, and front fascia — so the kit requires a different front-section design. The actual flare and skirt dimensions are identical between the two S550 kits (180 mm total front width and 220 mm total rear width), but the bumper endings and front lip are platform-specific.\u003c\/p\u003e\n\u003ch3\u003eHow does the width compare to other SHIROKAI Mustang kits?\u003c\/h3\u003e\n\u003cp\u003eThis S550 kit adds 180 mm of total width at the front and 220 mm at the rear (9 cm front and 11 cm rear per side). Our S197 kits add 180 mm total at the front and 240 mm at the rear (9 cm front and 12 cm rear per side). The slightly narrower S550 stance is intentional — it follows the S550's tighter factory body lines for a cleaner, OEM+ aggressive look rather than maximum-width drama. Both generations share the same 9 cm front-fender addition.\u003c\/p\u003e\n\u003ch3\u003eHow long does installation take?\u003c\/h3\u003e\n\u003cp\u003eTypical body shop install takes 1–3 days (excluding paint\/wrap), including test fit, drilling, and rivnut setup. The install requires drilling holes in the fender for rivnut-mounted flares — this is standard procedure for properly secured aftermarket widebody and shouldn't be attempted without the right tools.\u003c\/p\u003e\n\u003ch3\u003eWill my doors still open with the flares installed?\u003c\/h3\u003e\n\u003cp\u003eYes. The flares follow the factory door cutline. Both doors remain fully operable at any opening angle. The kit does not interfere with door handles, mirrors, or fuel filler door operation.\u003c\/p\u003e\n\u003ch3\u003eWhat wheel and tire setup works with this kit?\u003c\/h3\u003e\n\u003cp\u003eThe added width supports significantly wider wheel and tire setups than stock — typically 19x11 or 20x11 wheels with 295–315 mm tires in the rear, and 19x10 with 275–285 mm tires up front depending on offset preference. \u003c\/p\u003e","brand":"SHIROKAI - WIDEBODY KITS THAT FIT","offers":[{"title":"Kit without spoiler","offer_id":45982727438534,"sku":"S550.1820.WBNS","price":5060.0,"currency_code":"USD","in_stock":true},{"title":"Full kit with ducktail spoiler","offer_id":45982727405766,"sku":"S550.1820.WBF","price":5490.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0507\/1791\/7382\/files\/s550_rest.jpg?v=1782433996","url":"https:\/\/speedlogix.com\/products\/2018-2023-mustang-widebody-kit-s550-gt-shirokai","provider":"Speedlogix","version":"1.0","type":"link"}