AST Suspension 5100 Series Coilovers (Includes Front/Rear Top Mounts) (True Coilover) - 2006-2008 BMW Z4 2.5si Coupe/Convertible (E85/E86) swift-springs-coilover-springs Part Number KCA301 Part Name

Part Number KCA301 Part Name Control Arm Caster Bolt Vehicle 1994-1998 Acura Integra RS Chassis Code DC2 Bolt Thread Diameter 7/16 in

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AST Suspension 5100 Series Coilovers (Includes Front/Rear Top Mounts) (True Coilover) - 2006-2008 BMW Z4 2.5si Coupe/Convertible (E85/E86) swift-springs-coilover-springs Part Number KCA301 Part NameThe 5100 Series shock absorbers for the 2006 2008 BMW Z4 2. 5si Coupe Convertible (E85 E86) 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