The Eibach Pro-Kit is the perfect answer for most frequently-driven street cars. It is the legendary spring system of Eibach that dramatically improves both the performance and appearance of the vehicle. Pro-Kit lowers center of gravity of your car, reducing squat during acceleration, body roll in corners and excessive nose-dive under braking. When combined with Plus-1 or Plus-2 wheels and tires, the Eibach Pro-Kit is the finishing touch to a winning recipe for performance. Pro-Kit also reduces excessive fender-well clearance, making your car look just as hot as it performs. Every Eibach Pro-Kit is designed and tested by the suspension engineers of Eibach and performance driving professionals, to deliver aggressive good looks and high performance handling, without ever compromising safety or ride quality. By using the proprietary of Eibach, progressive spring design, Pro-Kit provides the ultimate balance to take your passion for driving to a whole new level. Compatible with Pontiac G8 Gt 2008-2009 Pontiac G8 Base 2008-2009