X4 high quality reduced bulkhead. Improves durability in hard crashes. Features centering pins for easy installation and consistent geometry settings. The bulkheads feature an excellent low anti-roll club mounting position that allows the anti-roll club cable become placed straight underneath the drive shafts to dramatically decrease the CG. The bulkheads function 1mm milled grooves for the ball bearing hubs that moved the bulkheads 1mm nearer towards the framework center line from each part. This bulkhead fits forward right part and backside left part. Created from premium Swiss 7075 T6 aluminum, black colored anodized.