These specialized rear end plates are engineered from a high-strength, hard compound composite material, specifically designed to enhance the structural rigidity of the Kyosho V-ONE R4 Evo.3 touring car's rear suspension. Their primary use case is within competitive nitro touring car racing, where drivers seek to optimize chassis flex characteristics for peak performance on high-grip tracks or in warmer operating conditions. By minimizing unwanted flex in the rear, these plates contribute to more precise and consistent handling during cornering and acceleration, allowing for finer tuning of the car's overall balance and responsiveness.