The optional ultra-lightweight completely redesigned, superior, low-profile Alpha human anatomy with super-smooth airflow and all-new downforce areas. The Alpha human body provides increased steering & safety while in addition increasing management in jumps. Paid down fat decreases the roll related to automobile and improves rotation in corners. The leading some our body has a new high-downforce area. The edges of the body have actually top downforce areas to generate more mid-body downforce, and right sidewalls improve protection. The top of an element of the human anatomy ended up being redesigned with a smooth flow channel. Various XB4 bodies can be bought different thicknesses for fine tuning the performance for the car.