4WD System Slot.it - Slot Car-Union

4wd slotSlot.it supply their e-Tron Quattro with the front pulley one tooth larger than the rear one, which ensures that the front axle spins whenever the rear one does, but always slhtly slower, giving a rear-drive bias.In slot car racing, YOU drive the car. In mini 4wd, the car drives by itself, with no input from anyone.