This is an optional Tekno RC 80mm Front Shock Spring Set. These 80mm long orange springs are compatible with the ET48 and NT48 1/8 trucks, feature 7.5 turns of 1.6mm wire, and are two steps stiffer than the springs that are included in the kit. 

Available Front Shock Springs

• TKR6090: Pink (1.6 x 9.0T)
• TKR6091: Green - Stock (1.6 x 8.5T)
• TKR6092: Yellow (1.6 x 8.0T)
• TKR6093: Orange (1.6 x 7.5T)