Recent rule changes allow the use of the latest technology which allows for a very sophisticated spring with reduced end size for a small, lightweight retainer. This spring is recommended for drag race applications only.
| Mass (g) | 73.0 |
| Large End I.D. (in) | 0.845 |
| Large End O.D. (in) | 1.250 |
| Install Load (LB) | 150 |
| Install Height (in) | 1.800 |
| Open Load (LB) | 390 |
| Open Height (in) | 1.250 |
| Coil Bind Max (in) | 1.190 |
| Lift Max (in) | 0.550 |
| Frequency Base (CPM) | 39023 |
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