STI INVERTED ADJUSTABLE STRUT/SPRING KIT for the 2005-2006 SUBARU STI Inverted strut and fixed spring design lowers the vehicle approximately 15 mm. Front spring stiffness is increased 35% over stock, and 30% over stock on the rear springs. Front and rear struts include a 4-position strut dampening adjustment which may be adjusted to the dampening force of a stock WRX, to harder than a stock STI suspension. Struts are designed exclusively for the 2005-2006 Impreza STI models RETAIL $2150 Selling them for $1,799.00 Lisa