Subtle European style and the performance look of STI. The STI Boot Spoiler improves the high-speed stability of the vehicle by creating down force from the airflow over the boot of the car. The rear co-efficient of lift has been improved by approximately 40% in wind tunnel tests (when tested with the STI Front Lip Spoiler on GT). The optimum aerodynamic balance is achieved when the STI Boot Spoiler is combined with the STI Front Lip Spoiler. The spoiler is made from durable ABS resin and incorporates a LED high mounted rear stoplight. Note: This spoiler will need to be painted before fitment to vehicle.