XB4 Gamma 4D human anatomy is made particularly for low traction songs. The profile for the body improves the stability and increases downforce towards a corner associated with car to help create more traction the car. The high-performance, low-profile aerodynamic human anatomy for XB4D is made by XRAY to perfectly fit the car and work especially in low traction conditions. Especially designed to optimize backside down force to improve traction. Front was made to offer optimal steering. The edges of this body and cockpit are since flat as possible allowing atmosphere to move round the human anatomy for improved side security. At the top of roof are two integrated flow channels for better airflow. Made from high-quality premium Lexan material. Fits XB4