If you run a Traxxas Slash 4X4 with the LCG (Low Center of Gravity) chassis and want to make it tougher, this aluminum bulkhead set is a great upgrade. It replaces the stock plastic front and rear bulkheads (the structural pieces that hold the differentials and connect to the chassis) with CNC-machined aluminum ones. Why? Aluminum is way stronger and more resistant to bending or breaking during crashes or hard landings. This adds significant durability to the drivetrain area of your Slash. They come as a set (one front, one rear) and are anodized in various colors to match your style. Installation is a bit more involved than a simple screw-on part – you'll need to partially disassemble your truck. But for serious bashers or racers who want their Slash to handle more punishment, this is a very popular and effective hop-up part. Just confirm it's for the LCG chassis, not the standard one.