1Vehicle Fitment: Replacement for Mercedes?Benz A Class W176 2012?2018. (Only for standard version! Not for sports version!). 2Aerodynamic Design: The rear bumper lip can improve the aerodynamic characteristics by enhancing the transition between the high speed airflow under the vehicle and the free airflow in the surrounding atmosphere. 3Better Driving Experience: The bumper side diffuser provides space for the airflow under the vehicle to decelerate and expand, thereby providing a degree of pressure recovery. Does not cause excessive airflow resistance. 4Function: Rear bumper side splitter provides powerful protection for your car, can well protect your vehicle edge from abrasion and scratch. 5Rugged and Durable: Rear bumper splitter wing is made of premium Abs material, impact resistant, high temperature resistant, not easy to break.