RC Raven E-Maxx 3903 or 3908 Black anodized aluminum bottom braces with free center skid plate CNC Machined from 6061 T6 Aircraft grade aluminum. Replace Stock Plastic Braces Stronger Aluminum Increasing the Stiffness of the Chassis for Better Performance. Black anodized center skid plate included free Fits the extended E-Maxx 3908 and 3907