The Racers Choice! Our Carbon Fiber Nitro Rustler/Sport Standard Style Rear Shock Tower is the choice for racers dedicated to racing the Nitro Rustler. This lightweight carbon fiber shock tower is very strong, very rigid and is a direct replacement for the stock plastic rear shock tower. No modifications are necessary to install our Carbon Fiber Standard Rear Shock Tower. Black hex screws and silver anodized spacers for mounting the shocks are included.