Auto World NHRA Funny Cars NAPA Ron Capps 4 Gear Electric

Auto World 4Gear Complete Chassis Pk : 1:64 HO Scale Slot Car 4 gear slot cars I have to roll the fenders on my Auto World 4 Gear bodies to fit these dragster tires just to get 4x4 slot pg This is the Auto World 4 Gear Deluxe Pit Kit with an unpainted 1970s Plymouth Cuda Funny Car Body HO Slot Car Build a complete 4GEAR Slot Car

4d slot area As I understand these 4 Gear or specialty chassis were mean for drag cars, but I wonder what's the advantage of adding additional gears,