Front top hands have actually extra mounting holes the front upper arm wings. The wings increase downforce in the front suspension for increased traction and assists to keep the buggy nose down. MEDIUM-hardness front UPPER suspension arm made from high-tech composite material. The exclusive MEDIUM composite combination employed for suspension system hands offers an ideal stability between dependability and performance; the suspension system arm is rigid enough for a responsive feel, yet soft enough for extreme durability. The medium-hardness arm works for most track conditions, especially medium-traction songs. Universal design allows the arm to be utilized on both left & right edges. The front upper arm is available in various hardnesses.