Bilstein B6 46mm Monotube Suspension Rear Shock Absorber - 13.7 in. Collapsed, 21.17 in. Extended 4 Series Gran Coupe and is treated with a

and is treated with a sophisticated surface coating to enhance strength and longevity

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Bilstein B6 46mm Monotube Suspension Rear Shock Absorber - 13.7 in. Collapsed, 21.17 in. Extended 4 Series Gran Coupe and is treated with aBilstein B6 Shock Absorbers and Struts are the ideal choice for improving the performance of any vehicle. These Shock Absorbers and struts feature a monotube design which provides consistent fade free performance. Bilstein B6 Shock Absorbers and struts utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions to provide consistent fade free performance. All B6 Shock Absorbers and struts are tuned for each