This is the Rear Shock Spring Tuning Set for the Team Durango DNX408v2 (TDRC0210) and the DEX408 (TDRC0300) Buggies. FEATURES: Steel construction, black in color Each spring is color coded to indicate damping rate Different damping rates allow user to fine tune rear shocks to specific track conditions INCLUDES: Two each; Orange, Black, Blue, White, Red, Gray, Green and Yellow Color Coded Springs (eight pairs) jxs 05/09/12 ir/jxs