Serie production spring seat must be used! Bilstein b4 OEM (original equipment manufacturer) replacement shock absorber for your Porsche with m030-sportsuspension. The b4 damper from bilstein is the perfect replacement for your Porsche. Facts: - constant damping power under any load - high power reserves for maximum safety - ride like it 's the first time, every time - OEM quality - bilstein gas pressure technology

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.