Fall-Line Motorsports Rear Lower Control Arm Cup Subframe Bearing Set - G8X | F8XMADE IN THE USA. From years of competitive race experience, Fall Line has become synonymous with producing not only championship caliber race cars, but the finest suspension components that help propel them to victory. Rubber bushings found in the latest M Cars' rear camber arms are the last weak link in an otherwise rigid suspension. Fall Line's new lower control arm subframe cup bearings yield a significant improvement over the factory bushings; as