These carbon fiber rear bumper splitters are the perfect addition to any M3 or M4. Installation is easy only requiring 3M tape, and can be completed in under 5 minutes. Each set of F8x CF rear splitters features 100% carbon fiber craftsmanship and is finished with a UV resistant clearcoat. Whether your car is mainly stock or it already has other carbon fiber items installed - These M3 and M4 carbon fiber upper splitters are sure to give your car that personalized feel.