The Naraku Performance V-belt is reinforced compared to the original, this is done by inserting strong fibers in it. In addition, the surface of it is optimized so that the best possible friction between the V-belt and the variator is achieved - thus also the best possible power transmission. Note: As there are different lengths of V-belts for models with 12 "wheels, the dimensions of this V-belt must match your current: 729x17.8mm.