What is needed to ATV race?

Safety is paramount in any racing, an Excellent helmet, Excellent Motocross boots, Excellent goggles, designated racing apparel, such as: jersey, motocross pants, gloves. Motocross racing apparel have safety, and protection engineered into them, go with the best equipment, "Do not go cheap on your safety equipment", injuries happen in racing, the extent of those injuries could/can depend on the equipment you choose. And lastly, a ATV.