Spring Steel Construction
Linear-Rate spring allow more predictable linear dampening

Multi-Rate Springs, Dual-Rate (DRS) allow the optimum spring rate for each application. 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. "

Two 1.2mm wire black 10 turn linear Rate Springs
Two 1.2mm wire Silver 13 turn Multi Rate Springs
Two 1.3mm wire gold 13 turn Multi Rate Springs

length: (71mm)
Inner diameter: (13mm)
Wire diameter: (1.2, 1.3mm