1The rear bumper lip diffuser is made of ABS material, which has high strength, light weight, impact resistance and high heat resistance. 2Rear bumper chassis provides your vehicle with better aerodynamic performance and reduces drag. 3Rear bumper chassis improves fuel efficiency, enhances downforce, traction and stability. 4Rear bumper lip diffuser fits perfectly with the position of your rear bumper chassis, enriching the appearance and unique style of the vehicle. 5Rear lower bumper diffuser protects your car more intimately and protects your car from harm.