This is an optional Team Associated 12mm Big Bore Rear Medium Spring Kit, and is intended for use with the Team Associated B4.1, B44.1, T4.1, SC10 and SC10GT 1/10 scale vehicles equipped with the optional Team Associated 12mm Big Bore Shocks. These springs have more coils for a given spring rate which improves the rate tolerances. The springs are also black oxide coated to reduce corrosion without affecting rate tolerances.
- ASC91338: 12mm Rear Spring (Gray/2.20lbs)
- ASC91339: 12mm Rear Spring (Blue/2.30lbs)
- ASC91340: 12mm Rear Spring (Yellow/2.40lbs)