BMW Genuine M Performance Left&Right Sill Attachment Carbon Fits G90 G99 M5 51775A70D63/51775A70D63. The M Performance aerodynamic and exterior components. For the BMW M5 (G90) and M5 Touring (G99) are made. Of premium carbon or aramid and underline the car’s sporty. Character and striking look. The dynamic lines of the M Performance parts emphasise. The striking and sporty look of the BMW M5 in a unique way.