This is a Hot Racing steel multi-rate spring set for the Traxxas rear shocks used on the 2WD Slash, Rustler, and Stampede. These multi-rate springs are soft at the beginning to soak up the small bumps, but transitions (crosses over) to the stiff part of the rate to resist bottoming on jumps and other big hits.
Inner Diameter: ~15mm
Wire Diameter: (1.1mm, 1.3mm, 1.5mm)
2x 1.1mm Wire Multi-Rate Springs (Red)
2x 1.3mm Wire Multi-Rate Springs (Silver)
2x 1.5mm Wire Multi-Rate Springs (Gun Black)