This is the Associated optional rear spring set for most Associated trucks and buggies. These springs fit onto the shock absorbers. The five varieties of spring rates are represented by the different colors.
Two red 2.95 lb. springs (#ASC7436)
Two gold 2.75 lb. springs (#ASC7435)
Two blue 2.55 lb. springs (#ASC7434)
Two silver 2.10 lb. springs (#ASC6478)
Two green 1.90 lb. springs (#ASC6480)
The remainder of the front truck shocks.