FITMENT: HONDA CIVIC 2016-2021 Sedan 4 Door (Not For SI And SPORT Model) DESCRIPTION Made of High Quality Polypropylene Material, Waterproof, Lightweight But Durable, Not Easy To Break. Color: Carbon Fiber Look Size: 110cm x 23cm = 43.3' x 9.05'(L x W) (Check Picture For More Detail) Reduce Air Resistance This Diffuser Designed To Increase A Vehicle's Aerodynamic Performance. Reduces Car's Drag About 1.6% and Increases Down Force. Reduce the airflow into the bottom, improve the steady of vehicle during fast driving. Excellent Appearance and improve the sporty appearance for your car. Add much more aggressive to the rear end. Easy Install Comes With Pre-Drilled Hole To Match With the Holes At The Bottom Of the Rear Bumper. PACKAGE INCLUDE 1PCS Diffuser + Screw