APR Performance Carbon Fiber GTC 300 67" Adjustable Wing for 2015 2017 2011 2014 Subaru STI APR GTC 200 Series Carbon Fiber Wing AS 105918 APR Performance Carbon Fiber GTC 300 67" Adjustable Wing for GD GG APR Performance Carbon Fiber GTC 200 Adjustable Wing for BMW 4 Series. Spanning 60. 5 inches and a height of 10 inches, the New GTC 200 adjustable wing offers the perfect amount of downforce for your 2002 2007 Subaru WRX STI. 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 cover factory spoiler wing holes (WRX Only), will not cover STI spoiler holes.