Eibach Pro Kit Eibach Pro Kit Heinrich Eibach GmbH Eibach Pro Kit 1 () EIBACH 'PRO KIT' LOWERING SPRINGS (PART 3): FIRST DRIVE YouTube. Pro Kit lowers your 2011 2015 Chevrolet Volt center of gravity, 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 our suspension engineers and performance driving professionals, to deliver aggressive good looks and high performance handling, without ever compromising safety or ride quality. By using our proprietary, progressive spring design, Pro Kit provides the ultimate balance to take your passion for driving to a whole new level. High Performance Handling and Aggressive Good Looks Lower Center of Gravity Stop Quicker, Corner Faster and get Better MPG! Progressive Spring Design for Excellent Ride Quality Million Mile Warranty Lowers vehicle approximately front 0. 9" front & 1. 2" rear.