3DDesign (3D Design) Carbon Fibre Side Skirt Extensions for BMW 5 Series G30 Saloon & M5 F90 2017-2023 – Carbon Fiber Side Splitters, Rocker Panel Sill Blades, Aero Side Skirts – Fits M5 Competition Saloon

Transform the profile of your BMW with premium carbon side skirt extensions engineered by 3DDesign. These rocker panel blades add purposeful width, sharper lines and true motorsport presence while complementing the factory bodywork of the 5 Series and M5. Expect an OEM+ look, a lower visual stance and a high‑end finish that suits daily driving and show cars alike.

We run these on customer cars and our own builds, and feedback has been consistently excellent: tight fitment, stunning weave and a serious uplift in road presence. If you’re searching for G30 side skirt extensions, F90 rocker extensions, M5 sill blades, 5 Series aero side splitters or carbon side sills for BMW, this is the upgrade that delivers.

Why choose these carbon side blades

• Designed specifically for the BMW G30 5 Series and F90 M5 for precise alignment with factory sills
• Authentic 3DDesign styling for a refined, OEM+ appearance with aggressive intent
• Lightweight carbon construction for sleek, durable exterior styling
• Direct bolt-on upgrade with supplied fixings
• Perfect foundation for a full aero kit alongside a front splitter and rear diffuser

Compatibility

• BMW 5 Series saloon G30: 2017, 2018, 2019, 2020, 2021, 2022, 2023
• BMW M5 F90: 2018, 2019, 2020, 2021, 2022, 2023
• BMW M5 Competition F90: 2018, 2019, 2020, 2021, 2022, 2023

What’s included

• 1 x pair of 3DDesign carbon side skirt extensions
• Mounting hardware

Also searched as

BMW G30 side skirt extension, BMW F90 side blades, BMW 5 Series rocker extensions, M5 Competition sill extensions, BMW 5 Series body kit upgrade, carbon side splitters UK, BMW saloon aero kit, performance exterior styling, premium carbon side sills.

Installation

Professional fitting recommended. Book installation with MJ Modifications in Warwickshire for a seamless result. For a fitting quote, email info@mjmodifications.co.uk.

Add these carbon rocker extensions to your basket today and give your G30 or F90 a sharper, lower and more assertive look worthy of a true performance BMW.