Lower bulkhead with anti-roll bar mounting areas, fits front R and rear L side. CNC-machined from premium Swiss 7075 T6 aluminum, the bulkhead has been designed to provide the lightest and strongest possible support framework for the car. Color anodized in a distinctive orange color, and finished with stylish edging. The T4 platform with more centralized weight placement features the smallest and lightest bulkheads that are positioned more towards the chassis centerline to provide maximum traction, steering, and balance.