Bilstein PSS-9 Coilover System
 

The Bilstein PSS 9 Suspension provides the ultimate in performance tuning. The fully-adjustable mono-tube 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 for the level of performance you seek. Now you can enjoy the kind of precise suspension tuning formerly available only on race cars. The PSS 9 system puts you in complete control. Whether it's a weekend of competition or the daily commute absolute handling and control are just a few twists away. Superior Mono-tube Design & Fabrication! Rising Rate Self-Adjusting Working Piston! Patented Nitrogen Chamber & Floating Dividing Piston! One Piece Alloy Rod Guide & Seal System! Digressive Working Piston Assembly Increases Shock Life! Installation: Installs exactly like a stock shock polyurethane bushings and shock boots are included.Spring rates for MK4 PSS/PSS9 are 400front/315rearDrop for MK4 is approximately . 45mm front and 40mm rear