2008-09 Pontiac G8 | GXP Replacement Rear Bumper Diffuser

Upgrade the rear profile of your Pontiac G8 with this GXP Replacement Style carbon fiber rear bumper diffuser. Designed to add a sportier and more aggressive appearance, this rear-end upgrade enhances the sedan’s lower rear bumper area with a clean performance-inspired finish.

The rear bumper diffuser is designed to improve aerodynamic presence while giving the Pontiac G8 a sharper GXP-style rear profile. Its replacement-style design complements the factory body lines while adding a premium carbon fiber detail to the rear bumper area.

Crafted from carbon fiber, this rear bumper diffuser delivers lightweight construction, durable exterior styling appeal, and a sleek carbon fiber surface finish. Designed for 2008-2009 Pontiac G8 models, each package includes one GXP replacement-style rear bumper diffuser.

Product Specifications

Key Features

• GXP Replacement Style rear bumper diffuser designed for the Pontiac G8
• Designed for 2008-2009 Pontiac G8 models
• Crafted from carbon fiber
• Features a sleek carbon fiber surface finish
• Adds a sportier and more aggressive rear-end appearance
• Enhances the lower rear bumper with a GXP-style profile
• Designed to improve aerodynamic presence and rear profile styling
• Complements the Pontiac G8 factory body lines
• Ideal for exterior customization with a premium carbon fiber finish
• Includes one rear bumper diffuser

Configuration Options

• Package Style: GXP Replacement Style for a sportier rear bumper profile
• Component Option: Carbon fiber construction for lightweight exterior styling
• Finish Option: Carbon fiber surface finish
• Exterior Styling: Designed to add a premium GXP-inspired lower rear bumper detail

Package Includes

• One rear bumper diffuser

Note: Professional installation is recommended. Test fitting is recommended before final installation. This rear bumper diffuser is designed for 2008-2009 Pontiac G8 models and may require minor adjustments during installation for best fitment.

Installation

• Designed for installation on the rear lower bumper area
• Professional installation is recommended for proper alignment and secure fitment
• Test fitting is recommended before final mounting
• Some adjustment may be required during installation for best results
• Ensure the mounting surface is clean and properly prepared before installation

Fitment

• 2008-2009 Pontiac G8

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.