Rear window top roof spoiler compatible with:
for BMW 525i 2004-2010
for BMW 525xi 2006-2007
for BMW 528i 2008-2010
for BMW 528i xDrive 2009-2010
for BMW 528xi 2008
for BMW 530i 2004-2010
for BMW 530xi 2006-2007
for BMW 535i 2008-2010
for BMW 535i xDrive 2009-2010
for BMW 535xi 2008
for BMW 545i 2004-2006
for BMW 550i 2006-2010
for BMW M5 2006-2010

Advantages of installing a rear spoiler:
When a car is driving at high speed, there is an airflow difference between the car body and the outside world. When the airflow difference is large, the tire's grip is reduced, the car cannot drive stably, and may even lose control of the vehicle.

If you install a rear spoiler, the air resistance will be exerted as a downward pressure, the resistance will be offset as much as possible, the airflow pressure will be effectively controlled, the drag coefficient will be appropriately reduced, the stability of the car's high-speed driving will be enhanced, and it will also have a certain effect on saving fuel.

Extraordinary quality ABS material and matte black:
rear window top roof spoiler is made of extraordinary quality ABS material, which is lightweight and impact-resistant. No matter how bad the weather is, it will not affect its use and has a long service life. The matte black color makes it look cooler.