The Bilstein B12 (Pro-Kit) suspension series is the definitive choice for performance-oriented drivers who want to improve the handling and stance of their BMW without sacrificing ride quality. This kit provides a professional cornering system with fixed lowering, resulting in a lower center of gravity and direct steering response. The kit includes: 2x Front Gas-Pressure Shock Absorbers (Bilstein B8 Performance Plus) - Art. 35-120407 / 35-120414; 2x Rear Gas-Pressure Shock Absorbers (Bilstein B8 Performance Plus) - Art. 24-120425; 1x Eibach Pro-Kit Springs Set (Front and Rear) - Art. E10-20-014-02-22. Key features: Fixed lowering approximately 30mm front / 25mm rear, monotube gas-pressure technology, and Eibach progressive rate springs for superior comfort and performance.