Bilstein B3 Rear Coil Spring (40-303567) - BMW E61 Sport/MAM R1 Monotube Gas Pressure Technology: Consistent

Monotube Gas Pressure Technology: Consistent damping even under high-performance conditions—no fade

Engineered specifically for the Porsche 911 RSR (160 161)

fast response

Reduced Noise & Vibration: Restores quiet

OEM-Level Quality: Built to the same standards as factory-fitted compressors

Bilstein B3 Rear Coil Spring (40-303567) - BMW E61 Sport/MAM R1 Monotube Gas Pressure Technology: ConsistentIf you're looking for quality, look no further. By choosing BILSTEIN springs, you're backing an uncontested champion: a successful motor sports fitter and a leading original equipment manufacturer of automotive springs. The benefits of BILSTEIN B3 shock absorbers are: Innovative technical designs, such as Pigtail ends, Minibloc forms and central force design High quality chrome vanadium or chrome silicone steel for an extremely high level of break