The X4F framework is made for the CFF suspension system system hands being mounted via pivot balls directly to the chassis. The X4F framework works together the motor mount and bulkheads making use of alignment holes the centering pins for every of this mounted elements. Because of the centering pins, the construction of structural elements is straighforward, and plenty of significantly the elements resist motion in a collision to permit you finish the competition without losing price. The narrower design with this framework alongside the completely symmetrical type offer optimal flex traits. Fits X4F