Aluminum backside left bulkhead for 1-piece framework lowers the CG and features 2 centering pins rather than one to get more consistent placement and tweak resistance. The bulkhead is a 1-piece tweak-free design which rigid and robust. The bulkhead features top and paid down centering pins that align the top of and reduced pod dish during installation preventing movement between the components in case of a crash. The 1-piece bulkheads use scaled-down eccentric bushing inserts the trunk axle height adjustment. CNC-machined from premium & super-lightweight Swiss 7075 T6 aluminum to reduce the weight and also black colored anodized. Features holes for optional engine cooling fan.