The new bumper is a 3 in one design. You can use the bumper full open, semi closed or fully closed. The supplied inserts allow these changes in very little time. The inserts are easily and securely mounted in the bumper. The bumper is of a very rigid design with large upwards sections/edges to keep it stabile also when hot and still absorb crashes well.
The lower side has nicely shaped aero fins to guide the air below the car and influence downforce/steering.