Bilstein's PSS9 coilover kit boasts the largest available piston diameter for greater sensitivity and precise control. Patented digressive piston head design and deflective valving instantly reacts to changing road conditions. Monotube design dissipates heat more effectively than a twin tube shock for cooler, more efficient operation and longer life.

The Bilstein PSS9's fully-adjustable monotube gas shock absorbers offer a selection of nine precise compression and rebound settings, from comfort to competition. The front and rear progressive rate springs allow accurate adjustment of the vehicle ride height and center of gravity.

Rally Armor is proud to offer this excellent coil over kit for your 2002-2006 Impreza WRX (sedan/wagon) and Subaru Impreza 2004 STI.