Adjustable Bilstein suspension kit (height and hardness) for track use for Porsche Boxster 2.5 + 2.7

The Bilstein PSS 9 Suspension provides the ultimate in performance tuning. The 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 for the level of performance you seek. 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.

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.