Team Associated RC8B4.1 Factory Team Carbon Fiber Rear Arms Inserts. These optional carbon arm inserts are intended for the Associated RC8T4 to increase arm rigidity, reduce flex, and provide a more consistent and predictable handling response, especially under high loads or aggressive driving. By minimizing flex in the rear arms the chassis can feel more responsive and edgy, depending on the cars setup.
(2) Carbon Fiber Rear Arm Inserts