Team LOSI LMT Shock Spring, Red, 2.2 rate (4)LOS243016 Shock Spring Soft, Yellow, 1.1 rate (4): LMT (Front)LOS243017 Shock Spring Soft, Blue, 1.6 rate (4): LMT (Rear)LOS243018 Shock Spring Soft, Red, 2.2 rate (4): LMT (OPTIONAL)