Beginner (8v) Stay on track about 95% of the time. Weight Up to 35% lighter than any other HO chassis, 5% lighter than Mega-G. New afx 22005 super cars ford gt mega g+ tri-power ho slot car track set free sh expert (22v) youre on your own! MEGA G+ CHASSIS This new Mega G+ chassis doesnt just go faster or handle better than the competition.