From Concept to Reality... Building off the radical design of our project vehicle 'Krypton', The Base Open Fender System offers a revolutionary way to run a 40 in. tire with no lift, maintaining a lower center of gravity and aggressive stance. Modular design provides the option to run this system with or without optional fender flares (TF4410-1) The all new Fab Fours Open Fender System helps maintain the utility your truck was meant to have while giving you the style you always wanted...Welcome to the future.