The bodyshells is very important part modern RC racing. With a different shell can affect the down force, corning speed, responding speed, and lap time at last. The common sense of a good body shell, first, should light weight. But light weight usually means lack of stiffness, which definitely have a negative effect at the down force. So most of the racers like to reinforce certain parts of the shells like the rear wing or the side skirt to make the light weight shell stiffer, also can provide better downforce and durability for your RC car.
Here in rcMart you can find the right accessories for your shells, like rear spoiler, body post, body mount, etc.