AST Suspension 5100 Series Coilovers (Excludes Front/Rear Top Mounts) (Non Inverted) - 2001-2005 BMW 3 Series 318d Sedan/Touring/Coupe/Convertible (E46) xA 1979 Porsche 911 (Incl spindles)

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LS Chassis Code BC/BF Bushing Color Black Bushing Material Polyurethane Durometer 72 Grade Type Regular Installation Difficulty Easy Installation Time (hrs) 1 Kit Contents 4 Bushings

AST Suspension 5100 Series Coilovers (Excludes Front/Rear Top Mounts) (Non Inverted) - 2001-2005 BMW 3 Series 318d Sedan/Touring/Coupe/Convertible (E46) xA 1979 Porsche 911 (Incl spindles)The 5100 Series shock absorbers for the 2001 2005 BMW 3 Series 318d Sedan Touring Coupe Convertible (E46) utilize non inverted high performance monotube technology. In the past, these were known as the 4100 series. Monotube design shocks absorbers give your car a better performance than the standard twin tube design, the gas pressure is separated by a floating piston, and eliminates cavitation and airation within the oil chamber. The 5100 Series