SHOCK ABSORBER BILSTEIN B4 The best original shock absorber on the market. For 50 years now, the Bilstein B4 mono-gas pressure damper has been used in virtually every vehicle of recent decades. Replacement of the series shock absorbers, offers higher quality and better performance. The advantages of Bilstein B4: - Constant damping pressure under any load - Power reserves for maximum safety - First day driving every day - High quality OEM - Gas pressure technology BILSTEIN