Aluminum lower front side component LEFT bulkhead CNC-machined from premium lightweight Swiss 7075 T6 aluminum provides improved tightness and flex faculties for better steering characteristics, even with difficult spec tires. Redesigned to complement the updated composite anti roll club bearing bushings that eliminate the use of the bulkhead. The super-lightweight Swiss 7075 T6 aluminum bulkheads have actually a tremendously neat and lightweight design to give you the lowest priced fat and CG.