| Name | Wire gauge | spring diameter (center of wire) | number of coils | Modulous of... | Spring rate (kg/mm) | Spring rate lb/in |
|---|---|---|---|---|---|---|
| 41mm RaceTech .95 | 5.14 | 29.6 | 29.25 | 8420 | 0.96 | 53.6 |
| 41mm RaceTech .90 | 5.09 | 30 | 29 | 8420 | 0.9 | 50.2 |
| 41mm RaceTech .85 | 5.01 | 30.17 | 27.33 | 8420 | 0.88 | 49.1 |
| 41mm RaceTech .85 (2) | 4.94 | 30.25 | 26.5 | 8420 | 0.85 | 47.4 |
| 41mm RaceTech .80 | 4.87 | 29.9 | 28.1 | 8420 | 0.78 | 43.5 |
| mod'd F4(total) | 4.85 | 32.67 | 21 | 8420 | 0.79 | 44.1 |
| mod'd F4(final) | 4.85 | 32.67 | 16 | 8420 | 1.04 | 58.1 |
| 43mm mystery F4 | 5.00 | 31.38 | 23.5 | 8420 | 0.9 | 50.2 |
| R6 spings (I think) | 4.80 | 33.13 | 17 | 8420 | 0.9 | 50.2 |