Vorsteiner BMW G8X M3 M4 Carbon Fiber GTS V Aero Front Bumper (BMV3310) Clutchlines Kelford uses high quality fasteners ECMTuning Kelford uses high quality fasteners and a heli coil thread insert in the ring gear to allow enough torque to be applied while tightening fasteners The SF Intake intake system utilizes several unique features in an effort to maintain optimal flow for performance while minimizing turbulence that can cause engine management problems The G8X M3 & M4 launched with a very distinct change of direction in terms of styling PLEASE NOTE: This Bumper will NOT work for vehicles equipped with active cruise control (ACC)