Eibach Pro-System kits are designed to offer the best street performance without sacrificing ride quality. The Pro-System is a precisely balanced combination of damper, sport springs and bump-stop (secondary springs), designed and tuned to operate as a system. In today's high performance suspensions, the bump-stop plays an ever-increasing role-it is a part of the Eibach tuned suspension system-not just a suspension limiter. That's why the correct bump-stop and ride height is extremely critical for the overall performance.With the Eibach Pro-System performance suspension installed, you can expect to improve the vehicle turn in response, reduce the under-steer and experience less body-roll, all without sacrificing ride quality. A must for any sport enthusiast.