CNC-machined motor-side back bulkhead produced from premium extra-strong Swiss 7075 T6 aluminum, black colored colored coated for very long life and trendy appearance. Strategically machined for reduced fat while maintaining energy. The tiny rear bulkheads like the top bulkhead clamps are notably reduced and lighter, offering ultra-low CG for the back suspension system. Designed for exceedingly quick & effortless ride height modification. No more hassle to dismount the automobile to improve the trunk trip height! The included trip height shims are placed between your bulkhead and top bulkhead clamp to change ride height: smart & simple. The most recent method for ride height modification allows ultra-fine modification by 0.25mm increments, when compared with the earlier 0.5mm increments making use of eccentric bushings. Can be used with staying straight back bulkhead #373025.