SPL Parts Rear Spherical Lower Control Arm Bushing Set - 2008-2013 BMW 135i (E82/E88)These Rear Lower Control Arm Knuckle Bushing for the 2006 2011 BMW 323i (E90) replace the rubber factory bushing attaching the lower control arm to the knuckle with a low friction teflon lined spherical bearing. Replacing the OEM component with this bushing will allow for less deflection under heavy load, and less bind as the arm travels through its suspension. We use the largest possible FK bearing in this location for increased longevity and lower