Maxton Design Side Skirt Splitter Extensions V.3 — G82/G83 M4

The extensions are molded from automotive-grade ABS plastic, the same category of material used throughout the production car industry for its balance of low weight and real-world durability. They arrive in a deep gloss black finish that requires zero paint prep before installation — mount them and drive. If you prefer a seamless color match to your specific exterior, the surface takes paint well and can be handed off to any competent body shop for a custom finish.

Beyond the visual drop in ride height they create, these splitters do real work: they deflect road debris away from the lower door edges, reduce stone chips and scuffs on vulnerable underbody surfaces, and provide a modest improvement to side aerodynamic stability at speed. Coverage spans every variant in the current M4 lineup — G82 Coupe and G83 Convertible from the 2021 model year through the 2024 facelift refresh.

Each set ships with a full fitting kit and a printed instruction manual taped directly to the product so nothing gets separated in transit. A vacuum-sealed protective film wraps every piece to keep the gloss surface pristine from the warehouse to your garage — peel it back at install time and you'll find a flawless finish underneath. If you're comfortable with basic exterior trim work, this is a manageable DIY install; for those who prefer a showroom-level result, Maxton recommends having a professional body shop handle the final fitment.