These Kyosho yellow shock springs are precisely engineered to provide consistent and predictable suspension tuning for 1/8 scale RC vehicles, crucial for optimizing performance on various racing surfaces. Crafted from high-quality spring steel, they offer exceptional durability and maintain their specified spring rate, indicated by the 6.5 N/mm value, over prolonged, demanding use. With an overall length of 45mm, these springs allow RC enthusiasts and racers to fine-tune their vehicle's handling characteristics, absorbing bumps and controlling chassis pitch more effectively, ultimately leading to improved traction, stability, and faster lap times.