4WD System - Slot.it - Slot

4wd slotIt loves the technical course of my track, and should provide more consistent lapping overall on any track. I look forward to more 4WD cars from slot it. I think this system works really well,...On its Audi R18 e-tron Slot.it has created a 4WD system which is truly unique and innovative. In the Slot.it system, a toothed belt provides power to the front axle through two micro pulleys which are coupled to the left wheels.