BMW G45 X3 30 xDrive V-ST Style 5-Piece Gloss Black Rear Bumper Diffuser Kit 2025-2026

Upgrade the rear-end appearance of your 2025-2026 BMW G45 X3 with this V-ST Style Gloss Black Rear Bumper Diffuser Kit. Designed specifically for compatible X3 models equipped with the M Sport rear bumper, this five-piece aero kit adds aggressive shark-fin styling and matching side corner extensions for a sportier, performance-inspired appearance.

Constructed from durable, lightweight ABS plastic, the diffuser kit features a painted gloss black finish designed to complement the factory M Sport exterior. The five-piece configuration consists of one center splitter, two shark-fin components, and two side corner extensions. Together, these pieces create a distinctive sculpted lower rear bumper profile while retaining the original bumper assembly.

Designed as a direct add-on to the compatible factory rear bumper, the kit utilizes existing OEM mounting holes, screws, and clips. Minor drilling may be required depending on the vehicle's mounting configuration. Additional automotive-grade double-sided adhesive tape and washers are recommended for secure attachment. Professional installation is strongly recommended to ensure correct alignment and fitment.

Product Specifications

Key Features

• Designed for compatible 2025-2026 BMW G45 X3 models equipped with the M Sport rear bumper
• Distinctive V-ST Style shark-fin rear diffuser design
• Five-piece kit with center splitter, shark fins, and side corner extensions
• Durable, lightweight ABS plastic construction
• Painted gloss black exterior finish
• Creates a sportier and more aggressive rear bumper appearance
• Designed to complement the factory M Sport rear bumper
• Direct add-on installation without replacing the entire bumper
• Uses compatible OEM mounting holes and existing fasteners
• Additional automotive adhesive tape and washers recommended

Configuration Options

• BMW G45 X3 30 xDrive: Compatible 2025-2026 models equipped with the M Sport rear bumper.
• BMW G45 X3 xDrive30: Compatible 2025-2026 regional variants equipped with the matching M Sport rear bumper.
• Other G45 X3 Variants: Compatibility requires confirmation of the exact M Sport rear bumper configuration.
• Exclusion: Not compatible with BMW X3 M50 or standard non-M Sport rear bumpers.
• Design: V-ST Style five-piece shark-fin rear diffuser kit.
• Finish: Painted gloss black ABS plastic.

Package Includes

• 1 x V-ST Style Gloss Black Center Rear Bumper Splitter
• 2 x Gloss Black Shark-Fin Diffuser Components
• 1 x Left Rear Bumper Corner Extension
• 1 x Right Rear Bumper Corner Extension

Note: Designed exclusively for compatible 2025-2026 BMW G45 X3 models equipped with the M Sport rear bumper. Not compatible with BMW X3 M50 models or standard non-M Sport rear bumpers. This product is a five-piece add-on diffuser kit and does not replace the complete rear bumper. The painted gloss black finish is an aftermarket color and may not precisely match the factory black finish. Installation utilizes original mounting holes, clips, and screws; minor drilling may be required. Additional automotive-grade double-sided tape and washers are recommended for secure mounting but are not confirmed as included. Original factory clips and screws must be reused. Installation instructions are not included. Verify the factory rear bumper design and mounting locations before ordering. Professional installation is strongly recommended. Test fitting is recommended before final installation.

Installation

• Confirm the vehicle is a compatible 2025-2026 BMW G45 X3 equipped with the M Sport rear bumper.
• Inspect the factory rear bumper and its lower mounting points.
• Identify the center splitter, two shark-fin components, and two corner extensions.
• Clean and prepare the rear bumper mounting surfaces.
• Test fit all five components to check alignment and positioning.
• Locate the appropriate factory mounting holes and original screws or clips.
• Position the center splitter and shark-fin components in their intended locations.
• Align the left and right corner extensions with the original bumper contours.
• Secure the components using compatible factory fasteners and mounting points.
• Perform minor drilling only if required for proper mounting.
• Use additional suitable automotive double-sided adhesive tape and washers where appropriate.
• Verify secure attachment, component alignment, and clearance around surrounding bumper parts.
• Professional installation is strongly recommended.
• Test fitting is recommended before final installation.

Fitment

• 2025-2026 BMW G45 X3 30 xDrive with M Sport rear bumper
• 2025-2026 BMW G45 X3 xDrive30 with M Sport rear bumper
• Other 2025-2026 BMW G45 X3 configurations only when equipped with a confirmed matching M Sport rear bumper
• Not compatible with BMW G45 X3 M50
• Not compatible with standard non-M Sport rear bumpers
• Not listed for previous-generation BMW G01 X3
• Verify original rear bumper design, factory mounting points, and vehicle configuration before ordering

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 Retrofits & 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: 1-2 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.