This TRA5830 Chassis Conversion Kit Low Center of Gravity Slash 2WD by Traxxas includes the chassis with the lower-front chassis part, as well as two nerf bars, a battery hold-down, front and rear battery retainers, and two front shock springs. It is compatible with the scales 1:6, 1:10, 1:16, and 1:50. It is very light, weighing 0.83 lbs, and the low-CG makes it very stable.