The latest BMW G90 M5 Sedan and G99 M5 Touring combine aggressive M styling with the proportions and presence expected from BMW's flagship performance sedan and wagon. For owners looking to further enhance that factory design, the RW Carbon 3D Style Carbon Fiber Side Skirt Extensions provide a dedicated exterior upgrade that adds more visual definition to the lower side profile.

Designed specifically for the G90 and G99 M5, these side skirt extensions follow the factory body lines while introducing a more sculpted, motorsport-inspired appearance. Their 3D-style profile visually extends the lower side of the vehicle, helping create a wider and more aggressive stance without replacing the factory side skirts.

Constructed from full carbon fiber and finished with a high-gloss, UV-resistant clear coat, the RW Carbon extensions combine genuine carbon construction with a finish designed to complement other carbon fiber exterior components.

3D-Style Design for the G90 and G99 M5

The side profile plays an important role in the overall appearance of the M5. While front lips and rear diffusers naturally attract attention, side skirt extensions help connect those elements visually across the length of the vehicle.

RW Carbon's 3D Style design adds additional definition along the lower rocker area. The sculpted profile gives the side of the M5 a more substantial appearance while maintaining the general shape of the factory side skirts.

Rather than introducing a completely different body design, the extensions are intended to work with the existing G90/G99 styling and provide a more aggressive interpretation of the factory side profile.

Full Carbon Fiber Construction

The RW Carbon side skirt extensions are manufactured from full carbon fiber, providing the distinctive weave associated with high-end performance-oriented exterior components.

The carbon construction gives the extensions a premium appearance and makes them a natural match for other carbon fiber components already installed on the vehicle.

For owners building a coordinated exterior package, the extensions can be combined with carbon fiber front splitters, lips, rear diffusers, mirror components, and other exterior details to create a more consistent overall theme.

High-Gloss UV-Resistant Clear Coat

The carbon fiber is finished with a high-gloss, UV-resistant clear coat.

The glossy finish allows the carbon weave to remain highly visible while providing a smooth surface that complements the factory exterior.

UV resistance is particularly important for exterior carbon fiber components, as prolonged exposure to sunlight can affect finishes over time. The protective clear coat is designed to help protect the surface from everyday environmental exposure while maintaining the desired high-gloss appearance.

Designed Around the Factory M5 Side Skirts

The extensions are specifically developed for the BMW G90 M5 Sedan and G99 M5 Touring, allowing the design to follow the proportions and body lines of these chassis.

The application-specific design helps maintain a cohesive appearance with the factory side skirts rather than using a generic universal extension.

The result is an exterior modification that visually builds upon the original M5 design while adding a more pronounced lower side profile.

Enhancing the M5's Visual Width

One of the primary visual effects of a side skirt extension is the way it changes the perceived width of the vehicle.

The 3D-style profile extends outward from the lower side area, creating additional definition along the rocker panels. This can make the G90/G99 appear lower and wider from certain viewing angles while giving the side profile a more performance-focused appearance.

Combined with the M5's broad factory bodywork, the extensions help emphasize the vehicle's already aggressive proportions.

Complementing a Complete Carbon Fiber Exterior

The RW Carbon 3D Style Side Skirt Extensions work particularly well as part of a larger carbon fiber exterior package.

Installing a carbon fiber front lip or splitter without addressing the side profile can leave the vehicle visually disconnected between the front and rear. Side skirt extensions help bridge that transition by carrying the carbon styling farther along the vehicle.

They can be paired with:

• Carbon fiber front lips and splitters
• Carbon fiber rear diffusers
• Carbon fiber mirror components
• Carbon fiber rear aero components
• Other exterior carbon fiber upgrades

Using complementary carbon components throughout the vehicle can create a more cohesive appearance while retaining the original M5 design language.

Application-Specific G90 / G99 Fitment

These side skirt extensions are not designed as a universal BMW accessory. They are specifically developed for the latest-generation BMW M5.

The application covers both body styles built on the G90/G99 platform, allowing owners of either the M5 Sedan or M5 Touring to achieve the same style of exterior upgrade.

Fitment

• 2025+ BMW G90 M5 Sedan
• 2025+ BMW G99 M5 Touring

Chassis: G90 / G99
Application: BMW M5
Model Years: 2025+

Always verify the vehicle's exact chassis and model configuration before ordering.

Installation

The RW Carbon 3D Style Carbon Fiber Side Skirt Extensions are designed to mount to the underside of the factory side skirts using self-tapping screws.

Installation requires accurate positioning to ensure the extensions follow the factory side skirt lines correctly. Proper alignment is important not only for appearance but also for ensuring the extensions are securely mounted.

Professional installation is recommended, particularly when working with carbon fiber exterior components and drilling or fastening into the underside of the factory side skirts.

The installation does not require replacing the factory side skirts themselves.

RW Carbon Quality Control

RW Carbon specializes in carbon fiber automotive exterior products and inspects its products before shipment to help maintain consistent fitment and finish standards.

For a high-end vehicle such as the G90/G99 M5, attention to fitment and finish is especially important. The RW Carbon quality-control process is intended to ensure that each product meets the company's standards before reaching the customer.

Why Upgrade the G90/G99 M5 Side Profile?

The factory M5 already has an aggressive exterior design, but the lower side profile provides an opportunity to add another layer of visual definition.

The RW Carbon 3D Style Side Skirt Extensions offer:

• A dedicated G90/G99 M5 design
• Full carbon fiber construction
• Sculpted 3D-style appearance
• High-gloss carbon finish
• UV-resistant clear coat
• Enhanced visual width and presence
• Integration with the factory side skirt design
• Compatibility with broader carbon fiber exterior builds
• Application-specific fitment for the M5 Sedan and Touring

For owners who want a more complete carbon fiber appearance without replacing the factory side skirts, these extensions provide a straightforward way to transform the vehicle's side profile.

Specifications

• Brand: RW Carbon
• Product Type: Carbon Fiber Side Skirt Extensions
• Style: 3D Style
• Vehicle: BMW M5
• Chassis: G90 / G99
• Model Years: 2025+
• Material: Full Carbon Fiber
• Finish: High-Gloss Clear Coat
• UV Protection: UV-Resistant Clear Coat
• Installation: Self-Tapping Screws
• Part Number: bmwg9031
• Application: Side Skirts / Side Skirt Extensions

What's Included

• 1 × Set of 3D Style Carbon Fiber Side Skirt Extensions
• Mounting hardware

Conclusion

The RW Carbon 3D Style Carbon Fiber Side Skirt Extensions provide a purpose-built exterior upgrade for the 2025+ BMW G90 M5 Sedan and G99 M5 Touring.

With full carbon fiber construction, a high-gloss UV-resistant finish, and a sculpted 3D-style profile, the extensions add greater definition to the M5's lower side profile while maintaining integration with the factory side skirts.

For enthusiasts building a complete carbon fiber exterior, they also provide an important visual connection between front and rear aero components. Combined with a carbon fiber front lip, rear diffuser, or other exterior upgrades, the RW Carbon extensions can give the latest M5 a more cohesive and motorsport-inspired appearance.

Product Link: https://x-ph.com/rw-carbon-bmw-g90-g99-m5-3d-style-cf-side-skirt-extensions-2025-bmwg9031/