<span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); ">Which RC8 do you have? RTR - KIT - B - 2? Upgrades like he said of knuckles shock towers and braces are good. - make sure you have the Big Bore 16mm shocks - wouldn't change much else to aluminum like mentioned it transfers the breaks to other areas which you do not want to break. The front and rear suspension arms are fine plastic because if they break they are easy to fix. Aluminum depending on force of impact can bend and are ruined anyway. Best bet is to not hit the walls or nails and you won't have to worry about much - smile attached - good luck</span>