Carbon fibre rocker extensions for G8X M4
Transform the side profile of your G-series M4 with CT styling carbon fibre side splitters. Precision engineered from high quality, ultra lightweight pre-preg carbon fibre, these sill extensions deliver a sharper, lower visual line and a purposeful motorsport look while keeping an OEM-plus finish.
Designed in house by our team, the CT styling ensures a cohesive aesthetic that pairs perfectly with other exterior upgrades such as front lips and rear diffusers. The quality and fit are exactly what G8X owners expect. We have fitted these at MJ Modifications and customer feedback has been consistently excellent.
- Premium pre-preg carbon fibre construction for lightweight strength
- CT styling design for an aggressive, OEM-plus appearance
- Model-specific pieces for a clean, precise fitment
- Ideal upgrade for enthusiasts seeking a road-ready, track-inspired look
Vehicle compatibility
- BMW G82 M4 2021 onwards
- BMW G83 M4 2021 onwards
Why choose these side splitters
These rocker panel blades are a go-to styling upgrade for G8X owners who want premium materials and a refined, factory-like finish. The pre-preg carbon fibre delivers the right balance of lightness and rigidity, elevating your M4’s silhouette with a sleek, race-bred edge.
Fitting service
Professional installation recommended. MJ Modifications, based in Warwickshire, can fit these for you. Request a fitting quote at info@mjmodifications.co.uk.
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