This is a unique type of independent rear suspension system used on LT-F250F, King Quad, and LT-F250 that allows each rear wheel to follow the terrain independently. It gives the rider the benefits of a smooth ride and good traction control over uneven terrain. This system was designed specifically around the LT-F250F engine/frame and integrated rear drive layout. It is strong, lightweight, and provides a relatively high amount of rear wheel travel which is beneficial to any independent suspension system. Diagonal refers to how each arm is mounted and pivots on the frame.