New spring revised from manufacturing methods and materials can be replaced with line contact parts up and down, allowing you to switch between upper and vertical traction, lower and lateral traction. This allows you to change it according to the road surface and course layout. Try it with improved input response and traction. Spring specifications: Linear 0.04 inch (1.1 mm), Line Contact Type 8, Symmetrical, Total Length 1.2 inches (31 mm)