Change the driving behavior of your Savage Flux V2 with this center differential set. The center differential allows the front and rear axles of the vehicle to rotate at different speeds, depending on the traction at each axle: lower traction means higher speed. The effect is that you can accelerate harder before the front end of the vehicle lifts and flips over, but this comes at the cost of standing backflips and makes it more difficult to perform wheelies. The center differential uses the same housing and internal gears as the front and rear differentials and is a sealed construction that can be filled with silicone oil. Filling the center differential with oil allows you to adjust the differential's effect to your liking. HPI Racing recommends using 100k CST oil as a starting point.