Designed for high rpm, WSRD valve springs by BC & PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium H13 Tool Steel alloy for added wear resistance.
| Type | Single |
| Free Length | 1.337" |
| Seat | 1.130" @ 70 lbs |
| Open | 0.730" @ 205 lbs |
| Coil Bind | 0.660" |
| Spring Seat | Stock |
| Net Cam Lift |
0.430" / 10.92mm |