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