The Bilstein B14 PSS Suspension allows adjustable vehicle ride height without the expense of a fully adjustable damping system. The Bilstein B14 PSS kit features both coilover and standard monotube gas shocks with performance-level valving, with application specific, progressive rate coil springs. The solid aluminum spring seat and lock nut allows for precise adjustment of the vehicle's lowered ride height from 30mm to 50mm, even while installed. Bilstein's patented Triple-C-Technology coating ensures long-lasting resistance to corrosion. This kit is ideal for the driver looking to set a car's ride height for both looks and improved handling. Threaded Body Adjustable Range: - The Bilstein PSS adjustable ride height threaded bodies allows the fine tuning of the vehicle to fit the individual drivers demands and enables the adjustment of the height of the vehicle after they are installed. Product Features:Threaded body adjustable range of 20mm Lowering of approx. 30-50mm at front and rearRoad-tested and fine-tuned by BILSTEIN ride engineers, under extreme motorsport conditionsAluminum Spring plates and lock nutsSurface coating using Triple-C-Technology for long-lasting corrosion resistanceRound threads for easy adjustmentQuality sport springs made from highly durable materialGas pressure technologyBILSTEIN monotube technology, made in Germany Gas Pressure Technology Over time, the mono-tube gas pressure technology developed by BILSTEIN has established itself as a standard in automotive construction. This technology involves keeping the oil in the absorber under pressure, which prevents it from foaming when temperatures and loads are increasing. As a result, full damping power is retained even when the system is placed under extreme stress, a feature that can be observed in the self-lowering piston.Ensures a high level of traction and more precise handlingA must-have for powerful sport suspensionsAdded safety in all dynamic driving situations BILSTEIN's mono-tube technology The original and best: The original mono-tube gas pressure shock absorbers bore the BILSTEIN name, and we're still responsible for producing the best there is. BILSTEIN's mono-tube technology is the number-one choice in motorsports and series-production sports cars: no other type gives engineers the same freedom to choose the perfect installation location or position (e.g. Upside-Down technology).Large effective surface on the working piston creates increased damping power and better handlingImproved dissipation of thermal energy outwards enables a consistently high level of absorber performanceSturdy structure for added safety in Upside-Down Technology