The X4F framework is made for the CFF suspension system system system hands being mounted via pivot balls right to the framework. The X4F framework works together the motor mount and bulkheads using positioning holes the centering pins for each of this installed elements. Because of the centering pins, the construction of structural elements is straighforward, and numerous significantly the weather resist motion in a collision to allow you complete the competition without losing cost. The narrower design with this specific framework alongside the totally symmetrical kind offer optimal flex faculties. Fits X4F