{"title":"Ford rear diffuser","description":"\u003cdiv data-bqv-hero=\"1\" style=\"margin:0 0 22px\"\u003e\u003csvg viewbox=\"0 0 1200 260\" width=\"100%\" style=\"display:block;border-radius:14px;max-width:100%;height:auto;font-family:Poppins,Arial,sans-serif\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"Diffuseur arrière Ford\"\u003e\u003cdefs\u003e\u003clineargradient id=\"hbg\" x1=\"0\" y1=\"0\" x2=\"1\" y2=\"1\"\u003e\u003cstop offset=\"0\" stop-color=\"#00317f\"\u003e\u003c\/stop\u003e\u003cstop offset=\"1\" stop-color=\"#05070d\"\u003e\u003c\/stop\u003e\u003c\/lineargradient\u003e\u003c\/defs\u003e\u003crect width=\"1200\" height=\"260\" fill=\"url(#hbg)\"\u003e\u003c\/rect\u003e\u003cg opacity=\"0.15\" stroke=\"#ffffff\" stroke-width=\"3\"\u003e\u003cline x1=\"-220\" y1=\"58\" x2=\"110\" y2=\"58\"\u003e\u003canimate attributename=\"x1\" values=\"-220;1300\" dur=\"3.4s\" repeatcount=\"indefinite\"\u003e\u003c\/animate\u003e\u003canimate attributename=\"x2\" values=\"110;1630\" dur=\"3.4s\" repeatcount=\"indefinite\"\u003e\u003c\/animate\u003e\u003c\/line\u003e\u003cline x1=\"-420\" y1=\"232\" x2=\"-90\" y2=\"232\"\u003e\u003canimate attributename=\"x1\" values=\"-420;1300\" dur=\"4.6s\" repeatcount=\"indefinite\"\u003e\u003c\/animate\u003e\u003canimate attributename=\"x2\" values=\"-90;1630\" dur=\"4.6s\" repeatcount=\"indefinite\"\u003e\u003c\/animate\u003e\u003c\/line\u003e\u003c\/g\u003e\u003ctext x=\"60\" y=\"118\" fill=\"#ffffff\" font-size=\"44\" font-weight=\"800\"\u003eFord rear diffuser\u003c\/text\u003e\u003ctext x=\"62\" y=\"162\" fill=\"#e6edf7\" font-size=\"23\" font-weight=\"600\" opacity=\"0.92\"\u003eRTR and GT style for Mustang, Fiesta ST and Focus ST\u003c\/text\u003e\u003cg transform=\"translate(60,212)\" font-size=\"17\" font-weight=\"700\" fill=\"#0b0f17\"\u003e\u003crect x=\"0\" y=\"-23\" width=\"210\" height=\"32\" rx=\"16\" fill=\"#ffffff\" opacity=\"0.93\"\u003e\u003c\/rect\u003e\u003ctext x=\"16\" y=\"-1\"\u003eFree shipping\u003c\/text\u003e\u003crect x=\"226\" y=\"-23\" width=\"210\" height=\"32\" rx=\"16\" fill=\"#ffffff\" opacity=\"0.93\"\u003e\u003c\/rect\u003e\u003ctext x=\"242\" y=\"-1\"\u003eCut by model\u003c\/text\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003c\/div\u003e\u003cdiv data-bqv-seo=\"1\" style=\"font-family:Poppins,Arial,sans-serif;line-height:1.7;color:#0f172a\"\u003e\n\n\u003ch2\u003eFord rear diffuser: \u003cstrong\u003ebumper blade\u003c\/strong\u003e, \u003cstrong\u003efins\u003c\/strong\u003e and \u003cstrong\u003ecarbon finish\u003c\/strong\u003e\n\n\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eFord rear diffuser\u003c\/strong\u003e is the part that transforms the most ordinary lower bumper into a sporty factory-style rear end. This collection brings together diffusers, rear bumper blades and fin extensions cut for the 2015-2017, 2018-2021 and 2015-2023 Mustangs, as well as newer generations, in glossy black ABS, matte black or \u003cstrong\u003ecarbon fiber\u003c\/strong\u003e. The \u003cstrong\u003eRTR-style\u003c\/strong\u003e references reproduce the design of the most sought-after American kits for the Mustang.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose a rear diffuser dedicated to your Ford?\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eA rear end with more volume\u003c\/strong\u003e: the diffuser breaks up the flat surface of the lower bumper and creates a shadow line that visually elongates the car.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eThermoformed ABS or carbon fiber\u003c\/strong\u003e depending on the reference: materials that do not deform in the sun and resist gravel projections.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eReversible mounting\u003c\/strong\u003e on most models (high-temperature 3M double-sided adhesive and original clips), without drilling the bodywork.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eGeneration-specific cutouts\u003c\/strong\u003e: the shoulders and exhaust cutouts are designed for a specific model, not for a universal fitment.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe detail that changes the rear three-quarter photo\u003c\/h3\u003e\n\n\u003cp\u003eYou know the feeling: the car is clean, the rims are spotless, and yet the rear remains flat, smooth, a bit sad — especially on entry-level trims where the manufacturer has left a large area of textured plastic under the bumper. A diffuser fills exactly this area. In twenty minutes in a parking space, the line is closed, the exhaust tips find a frame, and the car finally gives the impression of being planted on the ground.\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eA \u003cstrong\u003eM Performance, AMG, R-Line or RS look\u003c\/strong\u003e depending on the chosen reference, without changing the entire bumper.\u003c\/li\u003e\n\n\u003cli\u003eA DIY installation, so \u003cstrong\u003ezero labor hours\u003c\/strong\u003e in bodywork.\u003c\/li\u003e\n\n\u003cli\u003eA part that also protects the lower bumper from \u003cstrong\u003egravel and curb scrapes\u003c\/strong\u003e.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eGlossy black ABS, matte black or carbon: which one to choose?\u003c\/h3\u003e\n\n\u003cp\u003eThe three finishes are installed in the same way, but they tell a different story and age differently.\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eGlossy black ABS\u003c\/strong\u003e: the best seller, it plays on contrast on light-colored bodies (white, gray, blue) and takes up the visual code of factory sport packs. It shows micro-scratches more easily, a quick polish is enough.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMatte black ABS\u003c\/strong\u003e: more discreet, it blends with the original textured bumpers and forgives dust better. Ideal if you want the volume without the showroom effect.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCarbon fiber\u003c\/strong\u003e: visible weave, reduced weight, superior UV resistance. It is the choice of the most refined configurations, and the one that pairs best with carbon mirror caps and a carbon spoiler.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility: Mustang 2015-2017 and other Fords\u003c\/h3\u003e\n\n\u003cp\u003eThe catalog notably covers \u003cstrong\u003eMustang 2015-2017, 2018-2021 and 2015-2023\u003c\/strong\u003e, \u003cstrong\u003eMustang S197 2004-2014\u003c\/strong\u003e, \u003cstrong\u003eFiesta MK7 and ST\u003c\/strong\u003e, \u003cstrong\u003eFocus ST MK4 2019-2022\u003c\/strong\u003e, \u003cstrong\u003eKuga\u003c\/strong\u003e. Each product sheet specifies the generation, years and bumper finish concerned.\u003c\/p\u003e\n\n\u003cp\u003eA diffuser is designed for a specific bumper: a Ford part intended for a sport pack will not fit correctly on a standard trim bumper. Always check the compatibility line of the sheet before ordering — and if in doubt, write to us with the model and year.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is a rear diffuser really used for on a production car?\u003c\/strong\u003e On a production car, its role is primarily aesthetic: it structures the lower bumper and gives a visual foundation to the rear. The actual aerodynamic effect remains marginal at speeds allowed on public roads.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the diffuser approved for the technical inspection?\u003c\/strong\u003e An added part that does not exceed the bumper dimensions, without sharp edges or protruding parts, does not pose a problem at the technical inspection. However, avoid any part that would cover the license plate, a light or a reflector.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow to install a rear diffuser without drilling the bumper?\u003c\/strong\u003e Most references are installed with high-temperature 3M double-sided adhesive, supplemented by the original clips. Degrease the area with isopropyl alcohol, position the part dry, then press firmly at a temperature above 15 °C.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan it be removed later without leaving a trace?\u003c\/strong\u003e Yes for adhesive mountings: a fishing line or an adhesive roller peels the part, and a residue remover cleans the rest. Screwed mountings, however, leave permanent holes.\u003c\/p\u003e\n\n\u003ch3\u003eDelivery, warranty and support\u003c\/h3\u003e\n\n\u003cp\u003eEach reference is shipped from our logistics network with package tracking, and \u003cstrong\u003edelivery is free\u003c\/strong\u003e on the entire catalog. You have 14 days to change your mind, and our team answers compatibility questions by email before and after purchase: give us the model, generation and year of your vehicle, we will confirm the exact reference.\u003c\/p\u003e\n\n\u003cp style=\"font-size:13.5px;color:#64748d\"\u003e\u003cstrong\u003eFrequent searches:\u003c\/strong\u003e mustang rear diffuser, mustang 2015 rear diffuser, mustang gt rear diffuser, mustang 2018 rear diffuser, ford fiesta rear diffuser, ford focus st rear diffuser, mustang rtr diffuser blade, mustang carbon diffuser, fiesta mk7 st rear diffuser, focus mk4 rear diffuser, ford rear bumper blade, ford rtr style diffuser.\u003c\/p\u003e\n\n\u003ch3\u003eAlso to discover\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003ca href=\"\/en\/collections\/becquet-ford\"\u003eFord Spoiler and Wing\u003c\/a\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"\/en\/collections\/lame-pare-choc-ford\"\u003eFord Bumper Blade\u003c\/a\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"\/en\/collections\/accessoires-carbone-ford\"\u003eFord Carbon Accessories\u003c\/a\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"\/en\/collections\/kit-carrosserie-ford\"\u003eFord Body Kit\u003c\/a\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e","products":[{"product_id":"diffuseur-arriere-4-ailettes-ford-mustang-2015-2023","title":"Rear Diffuser 4 Fins Ford Mustang 2015-2023","description":"\u003ch2\u003e4-Fin Rear Diffuser for 2015-2023 Ford Mustang: Racing Signature\u003c\/h2\u003e\u003cp\u003eGive your \u003cstrong\u003e2015-2023 Ford Mustang\u003c\/strong\u003e a track-ready rear end with this \u003cstrong\u003e4-fin rear diffuser\u003c\/strong\u003e. Designed for \u003cstrong\u003ecar tuning\u003c\/strong\u003e enthusiasts, this \u003cstrong\u003ecar diffuser\u003c\/strong\u003e redesigns your muscle car's rear bumper, giving it an \u003cstrong\u003eaggressive\u003c\/strong\u003e, sporty, and premium look worthy of the Mustang GT, GT500, or Shelby. An immediate and powerful \u003cstrong\u003ecar customization\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eA 4-Fin Design That Transforms the Rear\u003c\/h3\u003e\u003cp\u003eThe four vertical \u003cstrong\u003efins\u003c\/strong\u003e of the diffuser instantly create a recognizable \u003cstrong\u003eracing style\u003c\/strong\u003e. The \u003cstrong\u003erear blade\u003c\/strong\u003e highlights the bumper and accentuates the vehicle's visual width, for a muscular stance and a bold \u003cstrong\u003eaggressive automotive style\u003c\/strong\u003e. Two styles to choose from depending on your Mustang generation, to fit perfectly with the original silhouette.\u003c\/p\u003e\u003ch3\u003eRear Aerodynamics and Racing Finish\u003c\/h3\u003e\u003cp\u003eBeyond aesthetics, this \u003cstrong\u003erear diffuser\u003c\/strong\u003e channels airflow under the car and improves \u003cstrong\u003eaerodynamics\u003c\/strong\u003e during dynamic driving. A real asset for \u003cstrong\u003esport rear bumper\u003c\/strong\u003e enthusiasts who want to combine a \u003cstrong\u003epremium finish\u003c\/strong\u003e with an \u003cstrong\u003eexterior car tuning\u003c\/strong\u003e look. Discover our range of \u003ca href=\"https:\/\/becquet-voiture.com\/collections\/lame-pare-choc-voiture\"\u003ecar bumper blades\u003c\/a\u003e to complete your body kit.\u003c\/p\u003e\u003ch3\u003eABS Material, Quality, and Easy Installation\u003c\/h3\u003e\u003cp\u003eMade of \u003cstrong\u003eABS resistant\u003c\/strong\u003e to UV rays, weather, and impacts, this diffuser retains its black shine over time. The \u003cstrong\u003eeasy installation\u003c\/strong\u003e is done directly on the original rear bumper via high-performance adhesive fastening and screws, without permanent modification to the vehicle. A quick and reversible \u003cstrong\u003ecar aesthetic improvement\u003c\/strong\u003e. Discover our \u003ca href=\"https:\/\/becquet-voiture.com\/collections\/nouveau-accessoire-performance-voiture\"\u003ecar performance accessories\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOrder your 4-fin rear diffuser for the Ford Mustang now and give your muscle car the racing signature it deserves.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eVehicle Compatibility\u003c\/strong\u003e: Ford Mustang 2015-2023\u003cbr\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-quality ABS\u003cbr\u003e\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003cbr\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e: Glossy \/ Matte depending on style\u003cbr\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e: 4-fin rear diffuser \/ bumper blade\u003cbr\u003e\u003cstrong\u003ePosition on the Vehicle\u003c\/strong\u003e: Rear\u003cbr\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e: Double-sided adhesive + screws\u003cbr\u003e\u003cstrong\u003eProduct Condition\u003c\/strong\u003e: 100% New\u003cbr\u003e\u003cstrong\u003eMain Function\u003c\/strong\u003e: Aesthetics and aerodynamics\u003c\/p\u003e","brand":"becquet-voiture.com","offers":[{"title":"Style 2 — 2018-2023","offer_id":52534863790367,"sku":"14:200004890#18-23 Style 2","price":167.9,"currency_code":"EUR","in_stock":true},{"title":"Style 1 — 2015-2021 (5mm)","offer_id":52534863823135,"sku":"14:200004889#15-21 5mm thick","price":352.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/7911\/7343\/files\/diffuseur-arriere-4-ailettes-ford-mustang-2015-2023-vue-de-face.webp?v=1784847967"},{"product_id":"lame-diffuseur-arriere-ford-mustang-2015-2017-rtr","title":"Rear Diffuser Blade Ford Mustang 2015-2017 RTR Style","description":"\u003ch2\u003eFord Mustang 2015-2017 Rear Diffuser Blade — the RTR look for your pony car\u003c\/h2\u003e\u003cp\u003eEnhance the sporty character of your 2015, 2016 and 2017 Ford Mustang with this RTR-style rear bumper diffuser blade. A bodywork element that beefs up the rear and accentuates your vehicle's presence.\u003c\/p\u003e\u003ch3\u003eA design created for your Ford Mustang\u003c\/h3\u003e\u003cp\u003eInspired by the RTR spirit, this blade highlights the bottom of the rear bumper and creates an aggressive diffuser effect. Its matte black finish adds a racing touch that contrasts elegantly with the bodywork.\u003c\/p\u003e\u003ch3\u003eMaterial, quality \u0026amp; finish\u003c\/h3\u003e\u003cp\u003eMade from a durable and lightweight material, it withstands the demands of the road and the elements. The matte black finish is treated to retain its appearance over time.\u003c\/p\u003e\u003ch3\u003eInstallation, compatibility \u0026amp; durability\u003c\/h3\u003e\u003cp\u003eDesigned to fit the rear bumper of the 2015 to 2017 Ford Mustang. Screw and\/or high-strength adhesive mounting depending on the configuration. Professional installation is recommended; compatibility should be checked according to your version before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGive your Mustang an aggressive rear signature: order your RTR diffuser blade now.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Rear bumper diffuser blade (RTR style)\u003cbr\u003e\u003cstrong\u003eCompatible Make \/ Model:\u003c\/strong\u003e Ford Mustang\u003cbr\u003e\u003cstrong\u003eYears:\u003c\/strong\u003e 2015, 2016, 2017\u003cbr\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Matte black\u003cbr\u003e\u003cstrong\u003ePosition:\u003c\/strong\u003e Rear\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Durable polymer\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e 100% New\u003cbr\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e Screws \/ adhesive, professional installation recommended\u003c\/p\u003e","brand":"becquet-voiture.com","offers":[{"title":"Matte Black","offer_id":52586356572447,"sku":"14:200004889#Matte Black;200007763:201336100","price":361.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/7911\/7343\/files\/lame-de-diffuseur-arriere-ford-mustang-2015-2017-style-rtr-vue-de-face.webp?v=1784815577"},{"product_id":"diffuseur-arriere-ford-fiesta-2009-2015","title":"Rear Diffuser Ford Fiesta 2009-2015 Dual Exhaust","description":"\u003ch2\u003eFord Fiesta 2009-2015 Rear Diffuser — the sporty dual-exit look that hugs your hatchback to the ground\u003c\/h2\u003e\u003cp\u003eGive your Ford Fiesta (2009 to 2015) a racing edge with this \u003cstrong\u003eFord Fiesta rear diffuser\u003c\/strong\u003e featuring dividers and an integrated \u003cstrong\u003edual exhaust\u003c\/strong\u003e. Designed for fans of dynamic hatchbacks, it instantly transforms the rear end. From behind, a stock Fiesta remains a modest compact: smooth bumper, empty lower section, discreet exhaust. Add this \u003cstrong\u003eFord Fiesta MK7 rear diffuser\u003c\/strong\u003e and the same car suddenly looks wider, lower, and ready to go.\u003c\/p\u003e\u003ch3\u003eA design that transforms your Ford Fiesta\u003c\/h3\u003e\u003cp\u003eThe vertical fins and dual exhaust layout create a competition diffuser effect that visually stretches the car toward the ground. The eye naturally follows the lines, perceiving a wider stance: it's the same visual trick used on factory sport versions. Several finishes are available to match your bodywork or receive custom paint.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003egloss black\u003c\/strong\u003e finish remains the safe bet: it creates the expected contrast on light bodywork and naturally extends the dark elements of a dark body. The more pronounced \u003cstrong\u003ecarbon look\u003c\/strong\u003e works remarkably well with dark wheels and a matching spoiler. Finally, the \u003cstrong\u003eraw to paint\u003c\/strong\u003e version paves the way for a perfect match with your Fiesta's paint, the preferred solution for those aiming for a \"factory-fresh\" look. On a \u003cstrong\u003eFord Fiesta ST\u003c\/strong\u003e or a sporty trim, the whole setup works particularly well with the stock bumper.\u003c\/p\u003e\u003ch3\u003eDesign, material \u0026amp; finish\u003c\/h3\u003e\u003cp\u003eMade from a rigid and durable material, this diffuser withstands road debris, light impacts, and the elements. The \u003cstrong\u003ehigh-density ABS\u003c\/strong\u003e combines two qualities that are difficult to bring together: enough rigidity to hold the shape of the fins without vibrating at high speed, and a slight flexibility that prevents cracking at the first curb. The raw versions can be painted to your liking — the surface accepts bodywork primer directly — while the finished versions offer a ready-to-fit look, without the need for a paint booth.\u003c\/p\u003e\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eIntegrated dual exhaust\u003c\/strong\u003e — the visual effect of a sporty line without touching the mechanics\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCompetition diffuser effect\u003c\/strong\u003e — vertical fins that stretch the rear toward the ground\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMultiple finishes\u003c\/strong\u003e — black, gloss black, carbon look, or raw to paint depending on your project\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eWeather-resistant ABS\u003c\/strong\u003e — rain, road salt, and high-pressure washing without deterioration\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eRear lower body trim\u003c\/strong\u003e — fills the void under the stock bumper, where the eye stops\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eNo irreversible modifications\u003c\/strong\u003e — additive fitment on the existing bumper\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003ch3\u003eInstallation, compatibility \u0026amp; durability\u003c\/h3\u003e\u003cp\u003eDesigned to fit the rear bumper of this generation Fiesta, it is fitted using \u003cstrong\u003ehigh-strength adhesive\u003c\/strong\u003e and fasteners. Careful installation, preferably by a professional, is recommended. In practice, the operation comes down to preparation: perfectly degreased bumper, part dry-fitted before removing the protections, and an ambient temperature above fifteen degrees so that the adhesive bonds correctly. Compatibility should be checked according to the version before installation, as the Fiesta has had several bumpers during this period.\u003c\/p\u003e\u003ch3\u003eWhat is a rear diffuser for on a hatchback?\u003c\/h3\u003e\u003cp\u003eOn a road car, the actual aerodynamic benefit remains marginal at legal speeds — let's be honest. Its role is primarily aesthetic, and it redefines the perceived proportions of the vehicle. An empty rear lower section gives the impression of a tall car; a \u003cstrong\u003erear bumper diffuser\u003c\/strong\u003e visually lowers the line by several centimeters and widens the stance. Along with the spoiler, it is the modification that changes the silhouette the most for the money spent. On a \u003cstrong\u003eFord Fiesta ST Line\u003c\/strong\u003e, it finishes a job that the manufacturer had only sketched out.\u003c\/p\u003e\u003ch3\u003eWhy order your Fiesta rear diffuser from Becquet Voiture?\u003c\/h3\u003e\u003cp\u003eWe list bodywork elements by precise generation, not by \"model\" in the broad sense: it's the only way to get a proper fit on a molded bumper. Our exterior tuning catalog covers \u003cstrong\u003ebumper blades, diffusers, and spoilers\u003c\/strong\u003e for the most modified European hatchbacks, with technical support in French to validate your phase before ordering. 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Complete with its fins and spoiler, this body kit transforms the rear of your vehicle, giving it a decidedly racing look. At first glance, the rear loses its smooth appearance and gains the sculpted structure seen on the most extreme versions. The \u003cstrong\u003ecarbon rear diffuser\u003c\/strong\u003e visually lowers the rear, widens the stance, and finally does justice to the roar of the V8.\u003c\/p\u003e\u003ch3\u003eA design tailored for your Ford Mustang\u003c\/h3\u003e\u003cp\u003eThe lines of the diffuser faithfully follow the Mustang's bumper for a perfect fit. The carbon finish provides a premium visual signature that highlights the car's aggressive profile. The vertical fins create a play of shadows that adds depth to the lower rear bodywork, exactly where the original bodywork remains flat and featureless. This \u003cstrong\u003eFord Mustang carbon\u003c\/strong\u003e piece does not just add to the car: it completes what the factory design had only hinted at.\u003c\/p\u003e\u003cp\u003eSeen from a rear three-quarter angle, the effect is immediate: the car appears lower and wider. Combined with the included spoiler, this \u003cstrong\u003eFord Mustang body kit\u003c\/strong\u003e creates a cohesive look from front to back, from the top of the trunk to the extractor.\u003c\/p\u003e\u003ch3\u003ePremium material, quality \u0026amp; finish\u003c\/h3\u003e\u003cp\u003eAvailable in carbon fiber, forged carbon, or matte black FRP, this kit combines lightness and strength. The meticulous finish of the carbon weave guarantees a premium look true to the Mustang's sporty spirit. \u003cstrong\u003eForged carbon\u003c\/strong\u003e offers a unique marbled pattern — no two pieces are ever identical — while the classic weave remains the ultimate benchmark for a competition look. The \u003cstrong\u003ematte black FRP\u003c\/strong\u003e version, meanwhile, provides a understated alternative that can be painted to match the exact color of your bodywork.\u003c\/p\u003e\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCarbon rear bumper diffuser\u003c\/strong\u003e — premium material, visible weave, deep UV-resistant clear coat\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eComplete kit with diffuser, fins, and spoiler\u003c\/strong\u003e — a cohesive transformation of the entire rear, not just an isolated piece\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eThree finishes to choose from\u003c\/strong\u003e — carbon fiber, forged carbon, or matte black FRP, depending on the desired style\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eLightweight composite\u003c\/strong\u003e — the rigidity of a structural panel with negligible weight\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSpecific fit for 2017-2023 Mustang\u003c\/strong\u003e — the lines follow the original bumper without gaps or visible daylight\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eInstant racing style\u003c\/strong\u003e — the rear gains depth, apparent width, and aggression\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003ch3\u003eInstallation, compatibility \u0026amp; durability\u003c\/h3\u003e\u003cp\u003eDesigned specifically for the 2017-2023 Ford Mustang, this diffuser mounts to the original rear bumper. Fitment and installation should be checked according to your version; professional installation is recommended for optimal results. \u003cstrong\u003eInstalling a rear diffuser\u003c\/strong\u003e requires a dry fit, precise marking of the mounting points, and progressive tightening: this is where the final quality of the finish is determined, especially the alignment with the exhaust tips.\u003c\/p\u003e\u003ch3\u003eDoes a rear diffuser really do anything?\u003c\/h3\u003e\u003cp\u003eYes, in two ways. The first is visual, and it is the most obvious: by breaking up the flat surface of the lower bumper, the diffuser creates definition and shadow, which visually lowers the car. The second is aerodynamic: the vertical fins channel the air exiting from under the floor and direct it toward the rear instead of letting it swirl. On a \u003cstrong\u003eMustang GT\u003c\/strong\u003e used on the track, this results in cleaner airflow behind the car. On the road, the main benefit remains style — and it is spectacular.\u003c\/p\u003e\u003ch3\u003eWhy order your Ford Mustang rear diffuser from Becquet Voiture?\u003c\/h3\u003e\u003cp\u003eBecquet Voiture is a specialist in styling and bodywork parts: we list them model by model and generation by generation, because a bumper cut for a 2017-2023 Mustang is completely different from the previous generation. On a carbon piece of this caliber, fitment makes all the difference. Our enthusiasts will advise you in French on the choice of finish — \u003cstrong\u003ecarbon, forged carbon, or matte black\u003c\/strong\u003e — before you confirm your order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGive your Mustang the racing look it deserves: order your carbon fiber rear diffuser now.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Rear bumper diffuser + spoiler\u003cbr\u003e\u003cstrong\u003eCompatible make \/ model:\u003c\/strong\u003e Ford Mustang\u003cbr\u003e\u003cstrong\u003eYears:\u003c\/strong\u003e 2017-2023\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Carbon fiber \/ forged carbon \/ matte black FRP\u003cbr\u003e\u003cstrong\u003eComponents:\u003c\/strong\u003e Diffuser, fins, spoiler\u003cbr\u003e\u003cstrong\u003ePosition:\u003c\/strong\u003e Rear (lower bumper)\u003cbr\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e Premium carbon look\u003cbr\u003e\u003cstrong\u003eStyle:\u003c\/strong\u003e Sporty racing look\u003cbr\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e Specific, fitment to be checked according to version\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e 100% New\u003cbr\u003e\u003cstrong\u003eMain function:\u003c\/strong\u003e Rear styling and aerodynamics\u003c\/p\u003e","brand":"becquet-voiture.com","offers":[{"title":"Carbon fiber","offer_id":52586359783711,"sku":"14:200004890#Carbon Fiber","price":1262.9,"currency_code":"EUR","in_stock":true},{"title":"Forged Carbon","offer_id":52586359816479,"sku":"14:200004891#Forged Carbon","price":1509.9,"currency_code":"EUR","in_stock":true},{"title":"Matte Black FRP","offer_id":52586359849247,"sku":"14:200004889#FRP Matte Black","price":908.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/7911\/7343\/files\/diffuseur-arriere-fibre-de-carbone-ford-mustang-2017-2023-vue-de-face.webp?v=1784816036"},{"product_id":"diffuseur-arriere-ford-mustang-2018-2021-noir-brillant","title":"Rear Diffuser Ford Mustang 2018-2021 Gloss Black","description":"\u003ch2\u003eMustang Rear Diffuser — the GT touch that changes everything at the rear\u003c\/h2\u003e\n\u003cp\u003eThis rear diffuser for the 2018 to 2021 Ford Mustang gives the American muscle car the aggressive lower bodywork it lacks from the factory. Its vertical fins and glossy black panel enclose the lower section and create a sharp contrast with the bodywork, exactly in the spirit of GT and GT500 modifications.\u003c\/p\u003e\n\u003ch3\u003eA design tailored for your Ford Mustang\u003c\/h3\u003e\n\u003cp\u003eThe design follows the original cutouts of the rear bumper: the fins align with the exhaust outlets and the lower line follows the contour of the fenders. Nothing protrudes, nothing looks out of place. The glossy black finish highlights the taillights and dark wheels, and pairs perfectly with a matching trunk spoiler or front lip for a cohesive body kit.\u003c\/p\u003e\n\u003ch3\u003eTechnology, quality \u0026amp; finish\u003c\/h3\u003e\n\u003cp\u003eThe part is made from injection-molded ABS plastic, a material renowned for its excellent stiffness-to-weight ratio and its resistance to gravel and temperature fluctuations. The glossy black varnish is factory-applied and resists high-pressure washing as well as UV rays. The edges are neatly finished and the mounting points are pre-drilled.\u003c\/p\u003e\n\u003ch3\u003eInstallation, compatibility \u0026amp; durability\u003c\/h3\u003e\n\u003cp\u003eInstallation is done by clips onto the original mounting points, supplemented if necessary by high-temperature double-sided adhesive: no cutting is required. Allow less than an hour with a thorough cleaning of the area before installation. Designed for the 2018, 2019, 2020, and 2021 Ford Mustang; on a version equipped with a specific bumper, compatibility should be checked before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGive your Mustang the stance it deserves — add this rear diffuser to your cart.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Lower body rear diffuser\u003cbr\u003e\u003cstrong\u003eCompatible Make \/ Model:\u003c\/strong\u003e Ford Mustang\u003cbr\u003e\u003cstrong\u003eYears:\u003c\/strong\u003e 2018-2021\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Injection-molded ABS plastic\u003cbr\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e Glossy black\u003cbr\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e By clips onto original mounting points, no cutting required\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e 100% New\u003cbr\u003e\u003cstrong\u003eMain function:\u003c\/strong\u003e Sporty style and lower rear bodywork trim\u003c\/p\u003e","brand":"becquet-voiture.com","offers":[{"title":"Gloss Black","offer_id":52770179645727,"sku":"14:200004890#Black","price":195.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/7911\/7343\/files\/Sfa38aa5052b347c7bd806f534136333fC.webp?v=1786493141"},{"product_id":"diffuseur-arriere-separateurs-lateraux-ford-mustang-2018-2021","title":"Rear Diffuser and Side Splitters Ford Mustang 2018-2021","description":"\u003c!--v3.1--\u003e\u003ch2\u003eFord Mustang 2018-2021 Rear Diffuser: The Wide, Detailed Rear End of the Performance Editions\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003erear diffuser for the Ford Mustang\u003c\/strong\u003e fits \u003cstrong\u003e2018 to 2021\u003c\/strong\u003e models of the facelifted sixth generation. The set includes the \u003cstrong\u003ecentral diffuser\u003c\/strong\u003e and its \u003cstrong\u003erear side splitters\u003c\/strong\u003e, those small low fins also known as lower canards. Mounted together, they structure the lower bumper, visually elongate the car, and give the rear end the aggressive look of American custom builds.\u003c\/p\u003e\u003ch3\u003eWhy choose this rear diffuser\u003c\/h3\u003e\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eComplete set\u003c\/strong\u003e: rear diffuser and \u003cstrong\u003eside splitters\u003c\/strong\u003e delivered in the same kit, designed to align.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eLightweight injected ABS\u003c\/strong\u003e: rigid and stable at high speeds, without adding weight to the rear overhang.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eGloss black, ready to install\u003c\/strong\u003e: no paint required, the contrast with the bodywork does all the work.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eNo cutting, no drilling\u003c\/strong\u003e: installation is done using high-strength adhesive on the original bumper.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMustang-specific fitment\u003c\/strong\u003e: the fins follow the contours of the 2018-2021 bumper without unsightly gaps.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003ch3\u003eRear bumper blade and canards: the detail that changes the silhouette\u003c\/h3\u003e\u003cp\u003eThe Mustang has a wide rear but a very smooth original lower bumper. A \u003cstrong\u003erear diffuser\u003c\/strong\u003e creates the missing shadow line, highlights the exhaust outlets, and balances the design of the three-bar taillights. Paired with a \u003cstrong\u003efront blade\u003c\/strong\u003e and a trunk spoiler, it creates a cohesive visual kit on a \u003cstrong\u003eMustang GT\u003c\/strong\u003e as well as an EcoBoost. It is a purely aesthetic and fully reversible modification, so it has no impact on resale value.\u003c\/p\u003e\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\u003cp\u003eSet made of \u003cstrong\u003eABS\u003c\/strong\u003e, \u003cstrong\u003egloss black\u003c\/strong\u003e finish, \u003cstrong\u003erear\u003c\/strong\u003e placement. The kit measures approximately \u003cstrong\u003e100 cm long\u003c\/strong\u003e by \u003cstrong\u003e30 cm wide\u003c\/strong\u003e and \u003cstrong\u003e20 cm high\u003c\/strong\u003e, including packaging. It is designed for the \u003cstrong\u003e2018, 2019, 2020, and 2021 Ford Mustang\u003c\/strong\u003e. Manufacturing tolerance of \u003cstrong\u003e1 to 3 mm\u003c\/strong\u003e depending on the parts. Compare the shape of your bumper with the photos before ordering, especially if your car already has a body kit.\u003c\/p\u003e\u003ch3\u003eInstallation and maintenance\u003c\/h3\u003e\u003cp\u003eAllow \u003cstrong\u003e30 to 45 minutes\u003c\/strong\u003e and a temperature above \u003cstrong\u003e15 degrees\u003c\/strong\u003e. Degrease the bumper with alcohol, dry fit each element, mark the position with masking tape, remove the adhesive backing, then apply firm pressure for one minute. Wait \u003cstrong\u003e24 hours\u003c\/strong\u003e before the first wash. For maintenance, a microfiber cloth and soapy water are sufficient; avoid abrasive products that dull the gloss black finish.\u003c\/p\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWill this diffuser fit a pre-2018 Mustang?\u003c\/strong\u003e\u003cbr\u003eNo. The 2018 facelift rear bumper is different from that of the 2015 to 2017 models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to drill the bumper?\u003c\/strong\u003e\u003cbr\u003eNo. Installation is done using \u003cstrong\u003ehigh-strength adhesive\u003c\/strong\u003e on the original paint, without drilling or cutting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit fit an EcoBoost as well as a GT?\u003c\/strong\u003e\u003cbr\u003eThe lower bumper is common to both versions during this period. Simply check the position of your exhaust outlets in the photos.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it hold up to high-pressure washing?\u003c\/strong\u003e\u003cbr\u003eYes, once the adhesive has cured. Avoid directing the lance directly at the glued edges from a few centimeters away.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the diffuser improve aerodynamics?\u003c\/strong\u003e\u003cbr\u003eIts role is primarily aesthetic. Expect a visual gain, not a measurable effect on downforce at legal speeds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGive your Mustang the rear end it deserves: gloss black diffuser and side splitters, installed in under an hour, without drilling.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Rear diffuser with side splitters\u003cbr\u003e\u003cstrong\u003eCompatible make and model:\u003c\/strong\u003e Ford Mustang\u003cbr\u003e\u003cstrong\u003eYears:\u003c\/strong\u003e 2018 to 2021\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e ABS\u003cbr\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e Gloss black\u003cbr\u003e\u003cstrong\u003ePlacement:\u003c\/strong\u003e Rear bumper\u003cbr\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e Adhesive, no drilling\u003cbr\u003e\u003cstrong\u003eContents:\u003c\/strong\u003e 1 diffuser and splitters set\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e 100% New\u003c\/p\u003e","brand":"becquet-voiture.com","offers":[{"title":"Gloss Black","offer_id":52876177965343,"sku":"14:200004889#Black","price":220.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/7911\/7343\/files\/S0c6337e897d04964ac14226883a38a7fx_db8293f4-6708-4301-a33a-83cbf6edeb92.webp?v=1789335125"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/7911\/7343\/collections\/gpt-diffuseur-arriere-ford.png?v=1791240828","url":"https:\/\/becquet-voiture.com\/en\/collections\/diffuseur-arriere-ford.oembed","provider":"Becquet Voiture","version":"1.0","type":"link"}