The engineers at BILSTEIN have created the ultimate race inspired suspension—the BILSTEIN B16 PSS9/PSS10. This innovative suspension system delivers unsurpassed driving performance. The manually adjustable damping mono-tube gas shock absorbers feature 9 or 10-stage precise compression and rebound settings, from comfort to competition. The threaded body allows accurate adjustability of the front and rear progressive rate springs to achieve the vehicle ride height, center of gravity and level of performance handling desired. The Bilstein B16 system puts you in complete control, providing the kind of precise suspension tuning formerly available only on race cars. From a weekend of competition to daily driving, this system provides perfect handling performance for every situation. *The product benefits at a glance:* * Individual settings ranging from maximum comfort to aggressive Sport can be selected by the twist of a dial (9 on PSS9, 10 on PSS10) * Threaded body adjustable range of 20 mm at both axles * Lowering of approx. 30-50 mm at front and rear * Road-tested and fine-tuned by BILSTEIN ride engineers, under extreme motorsports conditions * Spring plates and lock nuts made from a special aluminum alloy * Surface coating using Triple-C-Technology®for long-lasting corrosion resistance * Round threads for easy adjustment * Quality sport springs made from highly durable material * Quality sport springs made from highly durable material * Gas pressure technology * BILSTEIN monotube technology, made in Germany PartNumber : bil48-115575 Description : B16 (PSS9) - Suspension Kit Series : B16 (PSS9) Internal Design : Monotube Finish : Dampers: Zinc Plated Front Clear Anodized Rear/Springs: Blue Title : Bilstein Shock Absorbers California Proposition 65 : WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov Position : Front and Rear 2005-2008 Porsche 911 Carrera H6.3596cc Suspension::Coilovers 2009-2011 Porsche 911 Carrera H6.3614cc Suspension::Coilovers 2011-2012 Porsche 911 Carrera GTS H6.3800cc Suspension::Coilovers 2009-2011 Porsche 911 Carrera S H6.3800cc Suspension::Coilovers 2005-2008 Porsche 911 Carrera S H6.3824cc Suspension::Coilovers