Kansai Service Impreza WRX STi GDB Rear Diffuser (CF)

The Kansai Service Rear Diffuser improves undercarriage aerodynamics, and also improves rear downforce, without introducing aerodynamic drag. In Carbon Fiber construction.Improving the aerodynamics underneath the car can reduce the coefficient of drag, which increases top speed. Applicable for all model (2002+) Subaru ImprezaThis piece is lightweight and was designed for motorsports use on Japanese spec rear bumpers.Extensive modification may be necessary to adapt this diffuser onto US spec vehicles.