The differential allows this to happen. Two wheel drive vehicles have one axle and four wheel drive vehicles have two. Hope you can understand that once the item been sent out, we could not change the address.Our warehouse local at Unanderra, NSW, Australia. We specializing in motorcycles, ATV, off-road vehicles, Go karts and other accessories and outdoor sports products. Committed to providing you with quality products and services. If you have any questions, please consult us at any time, we will serve you wholeheartedly. We Accept return within 30days if item have not been use. We do not work on weekend and holiday, we reply soon once we get back work.