When your vehicle goes around a corner the wheel on the outside has to travel faster than the wheel on the inside. The differential allows this to happen.
Two wheel drive vehicles have one axle and four wheel drive vehicles have two. This item is in the category "Sporting Goods\Outdoor Sports\Go-Karts (Recreational)\Parts & Accessories".
The seller is "tdpro99" and is located in this country: US. This item can be shipped worldwide.