Fitment Information Subaru WRX & WRX STi (2002, 2003, 2004, 2005, 2006, 2007) Specs & Features Vehicle specific wing GTC-500 Series - 71" Wing Span Creates ample downforce with the lowest amount of drag Aluminum airfoils Product Description Spanning 71 inches, the GTC-500 Carbon Fiber Adjustable Wing is the largest wing available in APR's catalog. With its optimized 3D airfoil shape, the GTC-500 is perfect for high speed touring applications and supplies an ample amount of downforce without causing excess drag. All GTC Series wings feature an aerodynamic 3D designed airfoil shape to obtain the optimal balance of downforce. This design allows for a reduction in drag, yet maintains an ideal level of downforce. Computational Fluid Dynamics (CFD) analysis was performed on this wing to support validation of its aerodynamic design.Each GTC Series airfoil is composed of lightweight and durable carbon fiber reinforced polymer (CFRP) composite materials. These airfoils contain pre-pregnated woven carbon fiber sheets for superior strength and low weight. All CFRP airfoils are made using pre-pregnated composite manufacturing processes (i.e. high-temperature autoclave and vacuum bagging) in high-quality aluminum billet molds.Supporting the airfoils are 10mm "aircraft grade" 6061 billet aluminum pedestals that come in a flat black powder coat finish.Note: Mounting bases sit at edges of trunk lid. SCCA Classes Approved: STO, T1. Redline360 is an Authorized APR Performance Dealer and sells only the latest genuine and authentic APR Performance products.