The APR Performance SS/GT (Special Stage/Grand Touring) aerodynamic wide body kit offers traction gains to Impreza WRX and STI owners. The SS/GT aerodynamic kit increases overall body stance by 3.15 inches (80mm). With this increased distance, Impreza owners can now run 18-inch wheels with wheel diameters up to 305mm (315mm with additional suspension modification) To enhance increased traction and stability, APR Performance offers additional aerodynamic components such as a front 3-inch carbon fiber wind splitter with front under tray and rear carbon fiber diffuser. Detachable carbon fiber canards are also utilized for front aerodynamic tuning, while the rear adjustable carbon fiber GTC-300 WRX Spec wing, measuring 67 inches (1,700mm) in width and 12 inches (305mm) in height, aids in rear aerodynamic tuning. This Aerodynamic Kit Includes: Widebody Front Bumper with Brake/Oil Cooler Vents Carbon Fiber Wind Splitter and Front Undertray Carbon Fiber Canards Widebody Front Fenders (40mm) with Wheel Turbulence Exhaust Ports Widebody Side Skirt Widebody Rear Door, Gas Door and Fender Combination (40mm) Widebody Drag Reduction Rear Bumper PLEASE NOTE: Formula GT3 Mirrors and GTC-300 WRX Spec Wing are not included with the SS/GT Widebody Kit. Rear carbon fiber diffuser sold separately LIMITED PRODUCTION MADE TO ORDER KITS. 4-6 WEEKS DELIVERY TIME.