CNC-machined left motor-side back bulkhead created from premium extra-hard Swiss 7075 T6 aluminum, black coated for long life and fashionable look. Redesigned to accomplish maximum durability. The bulkhead allows for rear axle height modification via conventional eccentric bushings. Bulkheads feature centering pins on the top and bottom surfaces that align the top of and lower pod plates during construction and prevent motion involving the components during an accident. To help improve the construction's strength and resistance to tweak, the upper pod dish now utilizes 4 mounting screws to secure it towards the bulkheads can be used with right rear bulkhead #373019.