H&R 28mm F&R D&S Sway Bar Kit | BMW 440i/435i xDrive (14-20) (72878-3)H&R 28mm F&R D&S Sway Bar Kit Part #: 72878 3 Overview The H&R 28mm F&R D&S Sway Bar Kit is a high performance suspension upgrade designed to improve your vehicles handling and stability. Crafted for enthusiasts seeking a more responsive and confident driving experience, this kit enhances cornering capabilities and reduces body roll during aggressive maneuvers. Whether youre on the street or the track, these sway bars help you achieve a more precise