This is an Optional Hot Bodies Front Shock Spring set (Blue) for the D413 1/10 Scale 4WD Buggy Kit. The Blue rating springs are softer than the stock springs (Gold).
Front Spring Rates:
113059 - 1/10 BUGGY FRONT SPRING 52.3 G/MM (GREEN)
113060 - 1/10 BUGGY FRONT SPRING 54.4 G/MM (WHITE)
113061 - 1/10 BUGGY FRONT SPRING 56.7 G/MM (BLUE)
113062 - 1/10 BUGGY FRONT SPRING 59.1 G/MM (YELLOW)
113063 - 1/10 BUGGY FRONT SPRING 61.8 G/MM (GOLD) (Standard)