Ford Mustang S550 GT500 Style Rear Diffuser Quad Tips Primer Black 2018-2022

Upgrade the rear styling of your 2018-2022 Ford Mustang with this GT500 style quad tip rear diffuser. Designed for S550 Mustang EcoBoost and GT models, this conversion upgrade delivers a more aggressive rear-end appearance while maintaining OEM-style integration.

Inspired by the factory GT500 design, this rear diffuser features a quad-exit layout that enhances the lower bumper area with a sharper and more performance-focused look. The sculpted design improves rear visual balance and creates a more track-inspired appearance for street and show builds.

Constructed from durable ABS plastic, this diffuser offers lightweight strength, impact resistance, and long-term durability. Finished in primer black, it is ready for paint preparation and customization, making it ideal for color-matched or custom exterior builds.

Product Specifications

Key Features

• Designed for 2018-2022 Ford Mustang S550 EcoBoost and GT models
• GT500 style quad tip rear diffuser design
• Not compatible with Shelby or Mach 1 bumper models
• Constructed from durable ABS plastic
• Lightweight and impact-resistant for daily use
• Enhances rear bumper styling with a more aggressive appearance
• Quad-exit layout complements performance exhaust styling
• Precision-molded for proper fitment and alignment
• Primer black finish ready for paint customization
• Suitable for street, show, and performance builds

Configuration Options

• Primer black (unpainted)

Package Includes

• Rear bumper quad tip diffuser

Note: Designed for EcoBoost and GT bumper applications only. Not compatible with Shelby or Mach 1 bumper models. Professional painting and installation are recommended for best results.

Installation

• Direct installation onto factory rear bumper
• Test fit prior to painting and final installation
• Clean mounting surfaces before installation
• Professional installation recommended

Fitment

• 2018 Ford Mustang EcoBoost / GT
• 2019 Ford Mustang EcoBoost / GT
• 2020 Ford Mustang EcoBoost / GT
• 2021 Ford Mustang EcoBoost / GT
• 2022 Ford Mustang EcoBoost / GT
• Not compatible with Shelby bumper models
• Not compatible with Mach 1 bumper models

United States: Free shipping available to the lower 48 states across all items. Other states will incur a shipping charge.

Worldwide: Free shipping is available for Complete Headlights, Taillights, DRLs. For custom headlight retrofits, carbon fiber products, and performance products, there will be a shipping charge.  

Please note:
• For Retrofits, you are purchasing a headlight modification service.
• If you select "Shipping own headlights to BayOptiks for modification", you are required to send us your headlights.
• If you choose "Purchase new OEM headlights", we will order and modify a new OEM headlight for you.
• Once your customizations are complete, we will ship it to you!

• Complete Headlights: 3-5 business days for order processing plus shipping time.
• Custom & Pre-Built Headlights: 6-8 weeks depending on the complexity and component availability.
• New OEM and cores: 6-8 weeks plus an additional 4-8 weeks as these are special orders base on the vehicle VIN due to different versions (North American, European, etc.)
• DRLs, Taillights, Brake Pads, and Carbon Fiber Aero: 3-5 business days for order processing, plus shipping time.
• Lens Replacements: 1-3 weeks plus shipping time.

Please note, we do not have control over the time frames of our vendors, manufacturers, and delivery services as they may delay processes in regards to components and shipment.