Skip to main content

✨ 15% off 2+ items · 20% off 3+ · Free shipping on orders over €99 ✨

0

Your Cart is Empty

Rear diffuser Ford Mustang

Rear Diffuser 4 Fins Ford Mustang 2015-2023

Becquet Voiture price
167,90 €

Price in cart: 151,11 €
An extra −10% applied automatically, no code needed.

Model
Ships within 48 hours with tracking and insurance.
Free shipping on orders over 99 €, otherwise 9,95 €.
30 daysto change your mind
Secure payment3D Secure, PayPal
Legal warranty2-year conformity guarantee
Expert advicereply within 24 business hours
American Express Apple Pay BancontactBLIKCartes Bancaires EPS iDEAL WeroKlarnaMastercard MB WAY MobilePayPayPalSatispayShop Pay USDC Visa
DescriptionEverything about this product

4-Fin Rear Diffuser for 2015-2023 Ford Mustang: Racing Signature

Give your 2015-2023 Ford Mustang a track-ready rear end with this 4-fin rear diffuser. Designed for car tuning enthusiasts, this car diffuser redesigns your muscle car's rear bumper, giving it an aggressive, sporty, and premium look worthy of the Mustang GT, GT500, or Shelby. An immediate and powerful car customization.

A 4-Fin Design That Transforms the Rear

The four vertical fins of the diffuser instantly create a recognizable racing style. The rear blade highlights the bumper and accentuates the vehicle's visual width, for a muscular stance and a bold aggressive automotive style. Two styles to choose from depending on your Mustang generation, to fit perfectly with the original silhouette.

Rear Aerodynamics and Racing Finish

Beyond aesthetics, this rear diffuser channels airflow under the car and improves aerodynamics during dynamic driving. A real asset for sport rear bumper enthusiasts who want to combine a premium finish with an exterior car tuning look. Discover our range of car bumper blades to complete your body kit.

ABS Material, Quality, and Easy Installation

Made of ABS resistant to UV rays, weather, and impacts, this diffuser retains its black shine over time. The easy installation 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 car aesthetic improvement. Discover our car performance accessories.

Order your 4-fin rear diffuser for the Ford Mustang now and give your muscle car the racing signature it deserves.

Vehicle Compatibility: Ford Mustang 2015-2023
Material: High-quality ABS
Color: Black
Finish: Glossy / Matte depending on style
Product Type: 4-fin rear diffuser / bumper blade
Position on the Vehicle: Rear
Installation: Double-sided adhesive + screws
Product Condition: 100% New
Main Function: Aesthetics and aerodynamics

Vehicle compatibilityFord Mustang
Ford MustangChoose your version in the “Model” step above: the part matches that choice exactly.
  • Ford Mustang2018-2023
  • Ford Mustang2015-2021

Check before ordering

  • Number and position of the exhaust outlets, and rear bumper trim (standard or sport : ST-Line)
Not sure? Send us your VIN and the link to this product: we check compatibility for free and reply within 24 business hours. Ask an advisor
Installation1 h to 2 h · Screws and double-sided tape
DifficultyMedium
Time1 h to 2 h
FixingScrews and double-sided tape

Useful tools

  • Torx screwdriver
  • Socket wrench
  • Plastic trim removal kit
  • Jack and jack stands
  • Isopropyl alcohol

Fitting steps

  1. Dry-fit the diffuser

    Place the diffuser under the rear bumper of your Ford Mustang and check the alignment with the exhaust outlets. Check that the version received matches the "Model" option chosen.

  2. Remove the original part

    Remove the screws and clips under the bumper, then unclip the original skirt or diffuser.

  3. Clean and degrease

    Wash the fitting area, then degrease it with isopropyl alcohol. Let it dry completely.

  4. Stick, then screw

    Lay the diffuser on the double-sided tape, press for 30 seconds, then tighten the screws without forcing.

  5. Check the result

    Check the alignment with the exhaust outlets and the clearance from the ground.

  • Put the vehicle on jack stands or a lift: never work under a car held up only by the jack.
  • Let the exhaust cool down before working near it.
  • Fit above 59 °F (15 °C) and avoid washing for 24 h: the adhesive reaches full strength after that time.
Need help while fitting? Write to us with a photo: an advisor will reply within 24 business hours. Ask for help
Shipping and returnsShips within 48 hours · 30 days to change your mind
Order prepared and shipped within 1 to 2 business days, with a tracking link.
  • Delivery in 8 to 25 business days to France and Europe, 15 to 30 days to French overseas territories and the rest of the world. Shipping info.
  • Tracked and insured shipping (loss, damage, theft): 9,95 €, free on orders over 99 €.
  • 30 days after delivery to change your mind: item not fitted, in its original packaging.
  • Tracking link sent by email as soon as your order ships. Shipping policy · Return policy

4-Fin Rear Diffuser for 2015-2023 Ford Mustang: Racing Signature

Give your 2015-2023 Ford Mustang a track-ready rear end with this 4-fin rear diffuser. Designed for car tuning enthusiasts, this car diffuser redesigns your muscle car's rear bumper, giving it an aggressive, sporty, and premium look worthy of the Mustang GT, GT500, or Shelby. An immediate and powerful car customization.

A 4-Fin Design That Transforms the Rear

The four vertical fins of the diffuser instantly create a recognizable racing style. The rear blade highlights the bumper and accentuates the vehicle's visual width, for a muscular stance and a bold aggressive automotive style. Two styles to choose from depending on your Mustang generation, to fit perfectly with the original silhouette.

Rear Aerodynamics and Racing Finish

Beyond aesthetics, this rear diffuser channels airflow under the car and improves aerodynamics during dynamic driving. A real asset for sport rear bumper enthusiasts who want to combine a premium finish with an exterior car tuning look. Discover our range of car bumper blades to complete your body kit.

ABS Material, Quality, and Easy Installation

Made of ABS resistant to UV rays, weather, and impacts, this diffuser retains its black shine over time. The easy installation 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 car aesthetic improvement. Discover our car performance accessories.

Order your 4-fin rear diffuser for the Ford Mustang now and give your muscle car the racing signature it deserves.

Vehicle Compatibility: Ford Mustang 2015-2023
Material: High-quality ABS
Color: Black
Finish: Glossy / Matte depending on style
Product Type: 4-fin rear diffuser / bumper blade
Position on the Vehicle: Rear
Installation: Double-sided adhesive + screws
Product Condition: 100% New
Main Function: Aesthetics and aerodynamics

Reviews and photos

Customer reviews

Reviews from our customers

Ordered this product from us? Leave a review and add your photos: it helps other enthusiasts choose.

Newsletter

Join the Becquet Club

New arrivals, fitting & fitment guides, private offers: get the best car accessories straight to your inbox.