Hot Racing STD120MR128 120 Rock Crawler Dual Rate Springs (STD120MR128)

This is the optional dual rate Shock Spring Set for Hot Racing TD120 Rock Crawler Shock Multi-Rate Springs, Dual-Rate (DRS) allow the optimum spring rate for each application. These multi-rate springs are soft at the beginning to allow more articulation, but transitions to the stiff part of the rate to resist rollover. Two 1.0 mm wire (Silver in color). Two 0.9mm wire (Red in color). Two 1.1mm wire (Black in color). The springs must be installed onto the built shock. Main springs length: (90mm) Diameter inner: (14mm) Wire size0.9, 1.0, 1.1 mm