Subaru Impreza WRX STI (GDB-E, 2004–2007). The GDB STI, a rally legend on the street. Explore JRZ’s handbuilt coilovers for the WRX STI, custom-valved and adjustable up to 3-way double-adjustable for street, track day, and competition use. We are the official U.S. JRZ distributor, so you get expert spec, valving, and setup support with quick shipping.