AST Suspension 5100 Series Coilovers (Excludes Front/Rear Top Mounts) - 2009-2012 BMW 3 Series 316d (E9X) 230i 7 BiTurbo Chassis Code 8D/B5

7 BiTurbo Chassis Code 8D/B5 Drivetrain AWD Lowering Rate - Front 1

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AST Suspension 5100 Series Coilovers (Excludes Front/Rear Top Mounts) - 2009-2012 BMW 3 Series 316d (E9X) 230i 7 BiTurbo Chassis Code 8D/B5The 5100 Series shock absorbers for the 2009 2012 BMW 3 Series 316d (E9X) utilize inverted upside down technology. The inverted design is race proven technology and produces an extremely strong damper, providing better suspension geometry under heavy lateral and braking loads as seen in a road and track environment. The 5100 Series shock absorbers give your car a better performance than the standard twin tube design. With the 5100 Series suspension