Traxxas 7840 - Body Black Assembled For XRT On-Road Cars Kyosho states the purpose plainly:

Kyosho states the purpose plainly: the weights attach to the front knuckle to increase tire load and alter steering response

the electronics and the engine or motor when the car rolls

When looking at a brand-new touring car tire

Allows tuning with your preferred shock oil

Traxxas 7840 - Body Black Assembled For XRT On-Road Cars Kyosho states the purpose plainly:Traxxas 7840 Body Black Assembled For XRT. Body, XRT, black (painted, decals applied) (assembled with front & rear body supports for clipless mounting, roof & hood skid pads) Is it time to upgrade your XRT with an all new look? These tough polycarbonate bodies feature the hottest ProGraphix paint with pre applied decals. XRT bodies come fully assembled and ready to mount with pre installed front and rear body supports with roof and hood skids.